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lib: c: implement strcpy and strncpy

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max 🍓
2026-03-21 10:37:30 +00:00
parent 766411d983
commit 9148349f44
2 changed files with 29 additions and 0 deletions
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26
lib/libc/core/string/strcpy.c Normal file
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@@ -0,0 +1,26 @@
char *strcpy(char *output, const char *input)
{
unsigned int i;
for (i = 0; input[i] != 0; i++) {
output[i] = input[i];
}
output[i] = '\0';
return output;
}
char *strncpy(char *output, const char *input, unsigned int count)
{
unsigned int size = count;
unsigned int i;
for (i = 0; i < size; i++) {
output[i] = input[i];
if (input[i] == 0) {
break;
}
}
output[i] = '\0';
return output;
}

3
lib/libc/include/string.h
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@@ -11,6 +11,9 @@ extern size_t strlen(const char *s);
extern int strcmp(const char *s1, const char *s2);
extern int strncmp(const char *s1, const char *s2, unsigned long n);
extern int strcpy(const char *s1, const char *s2);
extern int strncpy(const char *s1, const char *s2, unsigned long n);
extern void *memset(void *str, int c, size_t n);
extern void *memcpy(void *dst, const void *src, size_t len);