diff --git a/string_my/string_my.c b/string_my/string_my.c
new file mode 100644
index 0000000..6fb3353
--- /dev/null
+++ b/string_my/string_my.c
@@ -0,0 +1,136 @@
+#include "string_my.h"
+
+int getNextDelim(FILE* file, int* token) {
+	int ch = getc(file);
+	if (ch == EOF) {
+		return 0;
+	}
+
+	if (isalnum(ch)) {
+		ungetc(ch, file);
+		return 0;
+	}
+
+	*token = ch;
+	return 1;
+}
+
+int getNextWord(FILE* file, char token[], int len) {
+	int ch;
+	int i = 0;
+	while ((ch = getc(file)) != EOF && (i < len - 1)) {
+		if (isalnum(ch)) {
+			token[i] = ch;
+		}
+		else {
+			break;
+		}
+		i += 1;
+	}
+	ungetc(ch, file);
+	token[i] = '\0';
+	if (i == 0) {
+		return 0;
+	}
+	else {
+		return 1;
+	}
+}
+
+int strlen_my_arr(char str[]) {
+	int len = 0;
+	while (str[len] != '\0') {
+		len++;
+	}
+	return len;
+}
+
+int strlen_my_ptr(char* str_ptr) {
+	char* str_ptr_old = str_ptr;
+	while (*str_ptr != '\0') {
+		str_ptr++;
+	}
+	return (int)(str_ptr - str_ptr_old);
+}
+
+int strcmp_my_arr(char str1[], char str2[]) {
+	int i = 0;
+	while (str1[i] != '\0' && str2[i] != '\0' && str1[i] == str2[i]) {
+		i++;
+	}
+	return str1[i] - str2[i];
+}
+
+int strcmp_my_ptr(char* str1, char* str2) {
+	while (*str1 != '\0' && *str2 != '\0' && *str1 == *str2) {
+		str1++;
+		str2++;
+	}
+	return *str1 - *str2;
+}
+
+char* strcpy_my_arr(char dest[], char source[]) {
+	int i = 0;
+	while (source[i] != '\0') {
+		dest[i] = source[i];
+		i++;
+	}
+	dest[i] = '\0';
+	return dest;
+}
+
+char* strcpy_my_ptr(char* dest, char* source) {
+	while (*source != '\0') {
+		*dest = *source;
+		dest++;
+		source++;
+	}
+	*dest = '\0';
+	return dest;
+}
+
+char* strcat_my_ptr(char* destination, const char* source) {
+	while (*destination != '\0') {
+		destination++;
+	}
+	while (*source != '\0') {
+		*destination = *source;
+		destination++;
+		source++;
+	}
+	return destination;
+}
+
+char* strchr_my_arr(char str[], int ch) {
+	int i = 0;
+	while (str[i] != '\0') {
+		if (str[i] == (char)ch) {
+			return &str[i];
+		}
+		i++;
+	}
+	return NULL;
+}
+
+char* strchr_my_ptr(char* str, int ch) {
+	while (*str != '\0') {
+		if (*str == (char)ch) {
+			return str;
+		}
+		str++;
+	}
+	return NULL;
+}
+
+char toupperMY(char ch) {
+	if (ch >= 'a' && ch <= 'z') {
+		return 'A' + (ch - 'a');
+	}
+	if (ch >= 'à' && ch <= 'ÿ') {
+		return 'À' + (ch - 'à');
+	}
+	if (ch == '¸') {
+		return '¨';
+	}
+	return ch;
+}
\ No newline at end of file
diff --git a/string_my/string_my.h b/string_my/string_my.h
new file mode 100644
index 0000000..1170bd4
--- /dev/null
+++ b/string_my/string_my.h
@@ -0,0 +1,22 @@
+#ifndef STRING_MY_H
+#define STRING_MY_H
+
+#include <stdio.h>
+#include <ctype.h>
+#include <string.h>
+
+int getNextDelim(FILE* file, int* token);
+int getNextWord(FILE* file, char token[], int len);
+
+int strlen_my_arr(char str[]);
+int strlen_my_ptr(char* str_ptr);
+int strcmp_my_arr(char str1[], char str2[]);
+int strcmp_my_ptr(char* str1, char* str2);
+char* strcpy_my_arr(char dest[], char source[]);
+char* strcpy_my_ptr(char* dest, char* source);
+char* strcat_my_ptr(char* destination, const char* source);
+char* strchr_my_arr(char str[], int ch);
+char* strchr_my_ptr(char* str, int ch);
+char toupperMY(char ch);
+
+#endif