diff --git a/README.md b/README.md
index 063cd1a..be5ca2d 100644
--- a/README.md
+++ b/README.md
@@ -97,7 +97,7 @@ touch main.c
 #include "libcproject/libcproject.h"
 
 int main() {
-  string string_value = "Hello, world!"; // `string` is a typedef from `libcproject`
+  string_t string_value = "Hello, world!"; // `string_t` is a typedef from `libcproject`
   printf("%s\n", string_value);
   printf("string_length = %ld\n", string_get_length(string_value)); // `string_get_length` is a function from `libcproject`
   return EXIT_SUCCESS;
diff --git a/lib/character.c b/lib/character.c
index 1e79e93..aa53ea1 100644
--- a/lib/character.c
+++ b/lib/character.c
@@ -1,11 +1,11 @@
 #include "character.h"
 
-void character_append(string string_value, const char character) {
+void character_append(string_t string_value, const char character) {
   size_t length = string_get_length(string_value);
   character_append_at(string_value, character, length);
 }
 
-void character_append_at(string string_value, const char character, const size_t index) {
+void character_append_at(string_t string_value, const char character, const size_t index) {
   size_t length = string_get_length(string_value);
   for (size_t index_string = length; index_string > index; index_string--) {
     string_value[index_string] = string_value[index_string - 1];
diff --git a/lib/character.h b/lib/character.h
index 679bbfc..faee9bd 100644
--- a/lib/character.h
+++ b/lib/character.h
@@ -14,7 +14,7 @@
  * @param character
  * @since v1.0.0
  */
-void character_append(string string_value, char character);
+void character_append(string_t string_value, char character);
 
 /**
  * @brief Append a character to a string at a specific index, assuming string points to an array with enough space.
@@ -24,7 +24,7 @@ void character_append(string string_value, char character);
  * @param index
  * @since v1.0.0
  */
-void character_append_at(string string_value, const char character, const size_t index);
+void character_append_at(string_t string_value, const char character, const size_t index);
 
 /**
  * @brief Converts the character to uppercase.
diff --git a/lib/convert.c b/lib/convert.c
index 38e3a50..afbbb53 100644
--- a/lib/convert.c
+++ b/lib/convert.c
@@ -1,7 +1,7 @@
 #include "convert.h"
 
-string convert_character_to_string(const char character) {
-  string string = malloc(sizeof(string) * 2);
+string_t convert_character_to_string(const char character) {
+  string_t string = malloc(sizeof(string) * 2);
   if (string == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -17,7 +17,7 @@ char convert_digit_to_character(const char digit) {
   return digit + '0';
 }
 
-long long convert_string_to_number(const string string_value) {
+long long convert_string_to_number(const string_t string_value) {
   bool is_negative = string_value[0] == '-';
   long long integer = 0;
   size_t length = string_get_length(string_value);
@@ -27,13 +27,13 @@ long long convert_string_to_number(const string string_value) {
   return is_negative ? integer * -1 : integer;
 }
 
-string convert_number_to_string(const long long integer) {
+string_t convert_number_to_string(const long long integer) {
   if (integer == 0) {
     return convert_character_to_string('0');
   }
   bool is_negative = integer < 0;
   size_t length = 1;
-  string string_value = malloc(sizeof(string) * length);
+  string_t string_value = malloc(sizeof(string_t) * length);
   if (string_value == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -42,17 +42,17 @@ string convert_number_to_string(const long long integer) {
     character_append(string_value, convert_digit_to_character(current % 10));
     current = current / 10;
     length++;
-    string_value = realloc(string_value, sizeof(string) * length);
+    string_value = realloc(string_value, sizeof(string_t) * length);
   }
   if (is_negative) {
     character_append(string_value, '-');
     length++;
-    string_value = realloc(string_value, sizeof(string) * length);
+    string_value = realloc(string_value, sizeof(string_t) * length);
   }
   return string_reverse(string_value);
 }
 
-string convert_number_from_base_10_to_base(unsigned long long number, unsigned int base) {
+string_t convert_number_from_base_10_to_base(unsigned long long number, unsigned int base) {
   if (number == 0) {
     return "0";
   }
@@ -63,7 +63,7 @@ string convert_number_from_base_10_to_base(unsigned long long number, unsigned i
     number = number / base;
     index++;
   }
-  string result = malloc(sizeof(string) * (index + 1));
+  string_t result = malloc(sizeof(string_t) * (index + 1));
   int index_result = 0;
   for (int iteration = index - 1; iteration >= 0; iteration--) {
     int remainder = remainders[iteration];
@@ -77,7 +77,7 @@ string convert_number_from_base_10_to_base(unsigned long long number, unsigned i
   return result;
 }
 
-int convert_number_from_base_to_base_10(string number, unsigned int base) {
+int convert_number_from_base_to_base_10(string_t number, unsigned int base) {
   int length = string_get_length(number);
   int exponent = length - 1;
   int result = 0;
@@ -96,6 +96,6 @@ int convert_number_from_base_to_base_10(string number, unsigned int base) {
   return result;
 }
 
-string convert_number_from_base_to_another(string number, int base_from, int base_target) {
+string_t convert_number_from_base_to_another(string_t number, int base_from, int base_target) {
   return convert_number_from_base_10_to_base(convert_number_from_base_to_base_10(number, base_from), base_target);
 }
diff --git a/lib/convert.h b/lib/convert.h
index 761d830..3521e95 100644
--- a/lib/convert.h
+++ b/lib/convert.h
@@ -15,7 +15,7 @@
  * @param character
  * @since v1.0.0
  */
-string convert_character_to_string(const char character);
+string_t convert_character_to_string(const char character);
 
 /**
  * @brief Convert a character to a digit.
@@ -39,7 +39,7 @@ char convert_digit_to_character(const char digit);
  * @param string
  * @since v1.0.0
  */
-long long convert_string_to_number(const string string_value);
+long long convert_string_to_number(const string_t string_value);
 
 /**
  * @brief Convert a number to a string.
@@ -47,7 +47,7 @@ long long convert_string_to_number(const string string_value);
  * @param integer
  * @since v1.0.0
  */
-string convert_number_to_string(const long long integer);
+string_t convert_number_to_string(const long long integer);
 
 /**
  * @brief Convert a number (base 10) to a string with a specific base.
@@ -56,7 +56,7 @@ string convert_number_to_string(const long long integer);
  * @param base
  * @since v1.0.0
  */
-string convert_number_from_base_10_to_base(unsigned long long number, unsigned int base);
+string_t convert_number_from_base_10_to_base(unsigned long long number, unsigned int base);
 
 /**
  * @brief Convert a number with a specific base to a number base 10.
@@ -65,7 +65,7 @@ string convert_number_from_base_10_to_base(unsigned long long number, unsigned i
  * @param base
  * @since v1.0.0
  */
-int convert_number_from_base_to_base_10(string number, unsigned int base);
+int convert_number_from_base_to_base_10(string_t number, unsigned int base);
 
 /**
  * @brief Convert a number with a specific base to a number of specific base.
@@ -75,6 +75,6 @@ int convert_number_from_base_to_base_10(string number, unsigned int base);
  * @param base_target
  * @since v1.0.0
  */
-string convert_number_from_base_to_another(string number, int base_from, int base_target);
+string_t convert_number_from_base_to_another(string_t number, int base_from, int base_target);
 
 #endif
diff --git a/lib/filesystem.c b/lib/filesystem.c
index 37436f1..50e4f68 100644
--- a/lib/filesystem.c
+++ b/lib/filesystem.c
@@ -1,6 +1,6 @@
 #include "filesystem.h"
 
-int filesystem_read(string path, byte **file_content, off_t *file_size) {
+int filesystem_read(string_t path, byte_t **file_content, off_t *file_size) {
   int file_descriptor = open(path, O_RDONLY);
   if (file_descriptor == -1) {
     return -1;
@@ -15,7 +15,7 @@ int filesystem_read(string path, byte **file_content, off_t *file_size) {
   return 0;
 }
 
-int filesystem_write(string path, byte *file_content, off_t file_size) {
+int filesystem_write(string_t path, byte_t *file_content, off_t file_size) {
   int file_descriptor = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
   if (file_descriptor == -1) {
     return -1;
@@ -27,7 +27,7 @@ int filesystem_write(string path, byte *file_content, off_t file_size) {
   return 0;
 }
 
-char *filesystem_get_mimetype(string path) {
+char *filesystem_get_mimetype(string_t path) {
   if (string_ends_with(path, ".html")) {
     return "text/html";
   }
diff --git a/lib/filesystem.h b/lib/filesystem.h
index f8a3d3e..d519ba8 100644
--- a/lib/filesystem.h
+++ b/lib/filesystem.h
@@ -13,7 +13,7 @@
 
 #include "string.h"
 
-typedef uint8_t byte;
+typedef uint8_t byte_t;
 
 /**
  * @brief Read the content of a file.
@@ -26,7 +26,7 @@ typedef uint8_t byte;
  * @retval 0 for success.
  * @since v1.0.0
  */
-int filesystem_read(string path, byte **file_content, off_t *file_size);
+int filesystem_read(string_t path, byte_t **file_content, off_t *file_size);
 
 /**
  * @brief Write the content to a file.
@@ -39,7 +39,7 @@ int filesystem_read(string path, byte **file_content, off_t *file_size);
  * @retval 0 for success.
  * @since v1.0.0
  */
-int filesystem_write(string path, byte *file_content, off_t file_size);
+int filesystem_write(string_t path, byte_t *file_content, off_t file_size);
 
 /**
  * @brief Get the mimetype of a file.
@@ -47,6 +47,6 @@ int filesystem_write(string path, byte *file_content, off_t file_size);
  * @param path
  * @since v1.0.0
  */
-string filesystem_get_mimetype(string path);
+string_t filesystem_get_mimetype(string_t path);
 
 #endif
diff --git a/lib/string.c b/lib/string.c
index 15d5f3f..89b147f 100644
--- a/lib/string.c
+++ b/lib/string.c
@@ -1,6 +1,6 @@
 #include "string.h"
 
-size_t string_get_length(const string string_value) {
+size_t string_get_length(const string_t string_value) {
   size_t length = 0;
   while (string_value[length] != '\0') {
     length++;
@@ -8,9 +8,9 @@ size_t string_get_length(const string string_value) {
   return length;
 }
 
-string string_to_uppercase(string string_value) {
+string_t string_to_uppercase(string_t string_value) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -20,9 +20,9 @@ string string_to_uppercase(string string_value) {
   return result;
 }
 
-string string_to_lowercase(string string_value) {
+string_t string_to_lowercase(string_t string_value) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -32,9 +32,9 @@ string string_to_lowercase(string string_value) {
   return result;
 }
 
-string string_replace(string string_value, char search, char replace) {
+string_t string_replace(string_t string_value, char search, char replace) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -49,9 +49,9 @@ string string_replace(string string_value, char search, char replace) {
   return result;
 }
 
-string string_trim_start(string string_value) {
+string_t string_trim_start(string_t string_value) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -65,9 +65,9 @@ string string_trim_start(string string_value) {
   return result;
 }
 
-string string_trim_end(string string_value) {
+string_t string_trim_end(string_t string_value) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -81,19 +81,19 @@ string string_trim_end(string string_value) {
   return result;
 }
 
-string string_trim(string string_value) {
-  string result = string_trim_start(string_value);
+string_t string_trim(string_t string_value) {
+  string_t result = string_trim_start(string_value);
   result = string_trim_end(result);
   return result;
 }
 
-string string_copy(const string string_value) {
+string_t string_copy(const string_t string_value) {
   return string_substring(string_value, 0, string_get_length(string_value));
 }
 
-string string_capitalize(string string_value) {
+string_t string_capitalize(string_t string_value) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -108,7 +108,7 @@ string string_capitalize(string string_value) {
   return result;
 }
 
-size_t string_total_occurrences_of_character(string string_value, char character) {
+size_t string_total_occurrences_of_character(string_t string_value, char character) {
   size_t result = 0;
   size_t string_length = string_get_length(string_value);
   for (size_t index = 0; index < string_length; index++) {
@@ -120,10 +120,10 @@ size_t string_total_occurrences_of_character(string string_value, char character
   return result;
 }
 
-string string_reverse(const string string_value) {
+string_t string_reverse(const string_t string_value) {
   size_t string_length = string_get_length(string_value);
   size_t index = 0;
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -134,7 +134,7 @@ string string_reverse(const string string_value) {
   return result;
 }
 
-bool string_equals(const string string1, const string string2) {
+bool string_equals(const string_t string1, const string_t string2) {
   size_t string1_length = string_get_length(string1);
   size_t string2_length = string_get_length(string2);
   bool is_equal = string1_length == string2_length;
@@ -146,7 +146,7 @@ bool string_equals(const string string1, const string string2) {
   return is_equal;
 }
 
-bool string_get_is_integer(const string string_value) {
+bool string_get_is_integer(const string_t string_value) {
   size_t index = 0;
   size_t string_length = string_get_length(string_value);
   bool is_integer = string_length >= 1;
@@ -166,13 +166,13 @@ bool string_get_is_integer(const string string_value) {
   return is_integer;
 }
 
-string* string_split(const string string_value, char separator, size_t* result_size) {
+string_t* string_split(const string_t string_value, char separator, size_t* result_size) {
   size_t string_length = string_get_length(string_value);
   size_t index_string = 0;
   size_t index_current = 0;
   size_t index_result = 0;
-  string current = malloc(sizeof(string) * string_length);
-  string* result = malloc(sizeof(string*) * index_result);
+  string_t current = malloc(sizeof(string_t) * string_length);
+  string_t* result = malloc(sizeof(string_t*) * index_result);
   if (result == NULL || current == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -198,14 +198,14 @@ string* string_split(const string string_value, char separator, size_t* result_s
   return result;
 }
 
-string string_join(string* array, const char separator, size_t array_length) {
+string_t string_join(string_t* array, const char separator, size_t array_length) {
   size_t string_length = array_length;
-  string string_value = malloc(sizeof(string_value) * string_length);
+  string_t string_value = malloc(sizeof(string_value) * string_length);
   if (string_value == NULL) {
     exit(EXIT_FAILURE);
   }
   for (size_t index_array = 0; index_array < array_length; index_array++) {
-    string substring = array[index_array];
+    string_t substring = array[index_array];
     size_t substring_length = string_get_length(substring);
     string_length += substring_length;
     string_value = realloc(string_value, sizeof(string_value) * string_length);
@@ -223,11 +223,11 @@ string string_join(string* array, const char separator, size_t array_length) {
   return string_value;
 }
 
-string string_concatenate(string string1, string string2) {
+string_t string_concatenate(string_t string1, string_t string2) {
   size_t string1_length = string_get_length(string1);
   size_t string2_length = string_get_length(string2);
   size_t result_length = string1_length + string2_length;
-  string result = malloc(sizeof(string) * result_length);
+  string_t result = malloc(sizeof(string_t) * result_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -240,13 +240,13 @@ string string_concatenate(string string1, string string2) {
   return result;
 }
 
-bool string_get_has_unique_characters(const string string_value) {
+bool string_get_has_unique_characters(const string_t string_value) {
   bool has_unique = true;
   size_t string_length = string_get_length(string_value);
   struct dictionary* characters_already_seen = dictionary_initialization();
   for (size_t index = 0; index < string_length && has_unique; index++) {
     char character = string_value[index];
-    string key = convert_character_to_string(character);
+    string_t key = convert_character_to_string(character);
     if (dictionary_contains_key(characters_already_seen, key)) {
       has_unique = false;
     } else {
@@ -256,16 +256,16 @@ bool string_get_has_unique_characters(const string string_value) {
   return has_unique;
 }
 
-string string_substring(const string string_value, size_t index_start, size_t index_end) {
+string_t string_substring(const string_t string_value, size_t index_start, size_t index_end) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   for (size_t index = index_start; index <= index_end; index++) {
     character_append(result, string_value[index]);
   }
   return result;
 }
 
-bool string_get_is_substring(const string string_value, const string substring) {
+bool string_get_is_substring(const string_t string_value, const string_t substring) {
   bool is_substring = false;
   size_t string_length = string_get_length(string_value);
   size_t substring_length = string_get_length(substring);
@@ -281,14 +281,14 @@ bool string_get_is_substring(const string string_value, const string substring)
   return is_substring;
 }
 
-string string_get_formatted_number(const long long number, string separator) {
-  string number_string = convert_number_to_string(number);
+string_t string_get_formatted_number(const long long number, string_t separator) {
+  string_t number_string = convert_number_to_string(number);
   bool is_negative = number_string[0] == '-';
   if (is_negative) {
     number_string = string_substring(number_string, 1, string_get_length(number_string));
   }
   size_t number_string_length = string_get_length(number_string);
-  string result = malloc(sizeof(string) * number_string_length);
+  string_t result = malloc(sizeof(string_t) * number_string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -313,9 +313,9 @@ string string_get_formatted_number(const long long number, string separator) {
   return result;
 }
 
-string string_get_last_occurence_of_character(const string string_value, char character) {
+string_t string_get_last_occurence_of_character(const string_t string_value, char character) {
   size_t string_length = string_get_length(string_value);
-  string result = malloc(sizeof(string) * string_length);
+  string_t result = malloc(sizeof(string_t) * string_length);
   if (result == NULL) {
     exit(EXIT_FAILURE);
   }
@@ -331,7 +331,7 @@ string string_get_last_occurence_of_character(const string string_value, char ch
   return result;
 }
 
-bool string_starts_with(const string string_value, const string prefix) {
+bool string_starts_with(const string_t string_value, const string_t prefix) {
   bool starts_with = true;
   size_t prefix_length = string_get_length(prefix);
   for (size_t index = 0; index < prefix_length && starts_with; index++) {
@@ -340,7 +340,7 @@ bool string_starts_with(const string string_value, const string prefix) {
   return starts_with;
 }
 
-bool string_ends_with(const string string_value, const string prefix) {
+bool string_ends_with(const string_t string_value, const string_t prefix) {
   bool ends_with = true;
   size_t string_length = string_get_length(string_value);
   size_t prefix_length = string_get_length(prefix);
diff --git a/lib/string.h b/lib/string.h
index cfdbe5f..dac4e4f 100644
--- a/lib/string.h
+++ b/lib/string.h
@@ -9,7 +9,7 @@
 #include "convert.h"
 #include "dictionary.h"
 
-typedef char* string;
+typedef char* string_t;
 
 /**
  * @brief Return the length of a string (excluding '\0').
@@ -18,7 +18,7 @@ typedef char* string;
  * @return size_t
  * @since v1.0.0
  */
-size_t string_get_length(const string string_value);
+size_t string_get_length(const string_t string_value);
 
 /**
  * @brief Converts all the alphabetic characters in a string to uppercase.
@@ -26,7 +26,7 @@ size_t string_get_length(const string string_value);
  * @param string
  * @since v1.0.0
  */
-string string_to_uppercase(string string_value);
+string_t string_to_uppercase(string_t string_value);
 
 /**
  * @brief Converts all the alphabetic characters in a string to lowercase.
@@ -34,7 +34,7 @@ string string_to_uppercase(string string_value);
  * @param string
  * @since v1.0.0
  */
-string string_to_lowercase(string string_value);
+string_t string_to_lowercase(string_t string_value);
 
 /**
  * @brief Replace all the occurrences of search value into replace value in the string.
@@ -44,7 +44,7 @@ string string_to_lowercase(string string_value);
  * @param replace_value A character containing the text to replace for match.
  * @since v1.0.0
  */
-string string_replace(string string_value, char search, char replace);
+string_t string_replace(string_t string_value, char search, char replace);
 
 /**
  * @brief Removes all whitespace from the start of a string.
@@ -52,7 +52,7 @@ string string_replace(string string_value, char search, char replace);
  * @param string
  * @since v1.0.0
  */
-string string_trim_start(string string_value);
+string_t string_trim_start(string_t string_value);
 
 /**
  * @brief Removes all whitespace from the end of a string.
@@ -60,7 +60,7 @@ string string_trim_start(string string_value);
  * @param string
  * @since v1.0.0
  */
-string string_trim_end(string string_value);
+string_t string_trim_end(string_t string_value);
 
 /**
  * @brief Removes all whitespace from the start and end of a string.
@@ -68,7 +68,7 @@ string string_trim_end(string string_value);
  * @param string
  * @since v1.0.0
  */
-string string_trim(string string_value);
+string_t string_trim(string_t string_value);
 
 /**
  * @brief Return the copy of a string.
@@ -76,7 +76,7 @@ string string_trim(string string_value);
  * @param string
  * @since v1.0.0
  */
-string string_copy(const string string_value);
+string_t string_copy(const string_t string_value);
 
 /**
  * @brief Capitalizes the string.
@@ -84,7 +84,7 @@ string string_copy(const string string_value);
  * @param string
  * @since v1.0.0
  */
-string string_capitalize(string string_value);
+string_t string_capitalize(string_t string_value);
 
 /**
  * @brief Returns the total number of occurrences of the given character in the string.
@@ -94,7 +94,7 @@ string string_capitalize(string string_value);
  * @return size_t
  * @since v1.0.0
  */
-size_t string_total_occurrences_of_character(string string_value, char character);
+size_t string_total_occurrences_of_character(string_t string_value, char character);
 
 /**
  * @brief Reverse the characters in an array.
@@ -102,7 +102,7 @@ size_t string_total_occurrences_of_character(string string_value, char character
  * @param string
  * @since v1.0.0
  */
-string string_reverse(const string string_value);
+string_t string_reverse(const string_t string_value);
 
 /**
  * @brief Check if two strings are equals.
@@ -112,7 +112,7 @@ string string_reverse(const string string_value);
  * @return true if the strings are equals, false otherwise.
  * @since v1.0.0
  */
-bool string_equals(const string string1, const string string2);
+bool string_equals(const string_t string1, const string_t string2);
 
 /**
  * @brief Check if the string is a integer.
@@ -121,7 +121,7 @@ bool string_equals(const string string1, const string string2);
  * @return true if the string is a integer, false otherwise.
  * @since v1.0.0
  */
-bool string_get_is_integer(const string string_value);
+bool string_get_is_integer(const string_t string_value);
 
 /**
  * @brief Split a string into substrings using the specified separator and return them as an array and update the pointer `result_size` to the resulting size of the created array.
@@ -130,7 +130,7 @@ bool string_get_is_integer(const string string_value);
  * @param separator
  * @since v1.0.0
  */
-string* string_split(const string string_value, char separator, size_t* result_size);
+string_t* string_split(const string_t string_value, char separator, size_t* result_size);
 
 /**
  * @brief Adds all the elements of an array into a string, separated by the specified separator string.
@@ -139,7 +139,7 @@ string* string_split(const string string_value, char separator, size_t* result_s
  * @param separator
  * @since v1.0.0
  */
-string string_join(string* array, const char separator, size_t array_length);
+string_t string_join(string_t* array, const char separator, size_t array_length);
 
 /**
  * @brief Concatenate two strings.
@@ -148,7 +148,7 @@ string string_join(string* array, const char separator, size_t array_length);
  * @param string2
  * @since v1.0.0
  */
-string string_concatenate(string string1, string string2);
+string_t string_concatenate(string_t string1, string_t string2);
 
 /**
  * @brief Check if a string contains only unique characters.
@@ -157,7 +157,7 @@ string string_concatenate(string string1, string string2);
  * @return true if string contains only unique characters, false otherwise.
  * @since v1.0.0
  */
-bool string_get_has_unique_characters(const string string);
+bool string_get_has_unique_characters(const string_t string);
 
 /**
  * @brief Returns the part of the string between the start and end indexes (both included).
@@ -167,7 +167,7 @@ bool string_get_has_unique_characters(const string string);
  * @param index_end
  * @since v1.0.0
  */
-string string_substring(const string string_value, size_t index_start, size_t index_end);
+string_t string_substring(const string_t string_value, size_t index_start, size_t index_end);
 
 /**
  * @brief Check if a string contains a substring.
@@ -177,7 +177,7 @@ string string_substring(const string string_value, size_t index_start, size_t in
  * @return true if the string contains the substring, false otherwise.
  * @since v1.0.0
  */
-bool string_get_is_substring(const string string_value, const string substring);
+bool string_get_is_substring(const string_t string_value, const string_t substring);
 
 /**
  * @brief Format a number to a string with specified separator.
@@ -186,7 +186,7 @@ bool string_get_is_substring(const string string_value, const string substring);
  * @example string_get_formatted_number(1000, " ") // "1 000"
  * @since v1.0.0
  */
-string string_get_formatted_number(const long long number, string separator);
+string_t string_get_formatted_number(const long long number, string_t separator);
 
 /**
  * @brief Returns a pointer to the last occurrence of character in the string.
@@ -195,7 +195,7 @@ string string_get_formatted_number(const long long number, string separator);
  * @param character
  * @since v1.0.0
  */
-string string_get_last_occurence_of_character(const string string_value, char character);
+string_t string_get_last_occurence_of_character(const string_t string_value, char character);
 
 /**
  * @brief Check if a string starts with a substring.
@@ -205,7 +205,7 @@ string string_get_last_occurence_of_character(const string string_value, char ch
  * @return true if the string starts with the substring, false otherwise.
  * @since v1.0.0
  */
-bool string_starts_with(const string string_value, const string prefix);
+bool string_starts_with(const string_t string_value, const string_t prefix);
 
 /**
  * @brief Check if a string ends with a substring.
@@ -215,6 +215,6 @@ bool string_starts_with(const string string_value, const string prefix);
  * @return true if the string ends with the substring, false otherwise.
  * @since v1.0.0
  */
-bool string_ends_with(const string string_value, const string prefix);
+bool string_ends_with(const string_t string_value, const string_t prefix);
 
 #endif
diff --git a/lib/terminal.c b/lib/terminal.c
index c7fbb7e..87d453a 100644
--- a/lib/terminal.c
+++ b/lib/terminal.c
@@ -1,9 +1,9 @@
 #include "terminal.h"
 
-string terminal_input() {
+string_t terminal_input() {
   char character;
   size_t length = 1;
-  string string_value = malloc(length * sizeof(char));
+  string_t string_value = malloc(length * sizeof(char));
   if (string_value == NULL) {
     exit(EXIT_FAILURE);
   }
diff --git a/lib/terminal.h b/lib/terminal.h
index b6bc2d6..a2a5091 100644
--- a/lib/terminal.h
+++ b/lib/terminal.h
@@ -16,7 +16,7 @@
  * @brief Read a line from stdin.
  * @since v1.0.0
  */
-string terminal_input();
+string_t terminal_input();
 
 /**
  * @brief Print an array.
diff --git a/main.c b/main.c
index e20f966..b2092b3 100644
--- a/main.c
+++ b/main.c
@@ -4,7 +4,7 @@
 #include "libcproject.h"
 
 int main() {
-  string string_value = "Hello, world!";
+  string_t string_value = "Hello, world!";
   printf("%s\n", string_value);
   printf("string_length = %ld\n", string_get_length(string_value));
   return EXIT_SUCCESS;
diff --git a/set_version.c b/set_version.c
index c4c2a47..fd2c25a 100644
--- a/set_version.c
+++ b/set_version.c
@@ -3,12 +3,12 @@
 
 #include "libcproject.h"
 
-int main(int argc, string* argv) {
+int main(int argc, string_t* argv) {
   if (argc != 2) {
     fprintf(stderr, "Usage: %s <version>\n", argv[0]);
     return EXIT_FAILURE;
   }
-  string content = "#ifndef __LIBCPROJECT_VERSION__\n";
+  string_t content = "#ifndef __LIBCPROJECT_VERSION__\n";
   content = string_concatenate(content, "#define __LIBCPROJECT_VERSION__ \"");
   content = string_concatenate(content, argv[1]);
   content = string_concatenate(content, "\"\n\n");