ft_strncmp - gabrielcoelhodacunha-old/42sp-libft GitHub Wiki
Description
Compares len characters of the null terminated strings s1 and s2.
Implementation
int ft_strncmp(const char *s1, const char *s2, size_t len)
{
size_t idx;
if (!len)
return (0);
idx = 0;
while (idx < (len - 1) && s1[idx] == s2[idx] && s1[idx])
idx++;
/* Returns the integer difference between the two strings at the last compared character.
The result is explained as:
1. positive value: `s1` is greater than `s2`
2. zero: `s1` is equal to `s2`
3. negative value: `s1` is lesser than `s2`
*/
return ((unsigned char) s1[idx]
- (unsigned char) s2[idx]);
}