strncmp.c

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#include <sys/types.h>
#include <stdio.h>
#include <string.h>

int strncmp(const char *s1, const char *s2, size_t n)
{
        while (*s1 && *s2 && *s1 == *s2 && n > 0) {
                n--;
                s1++;
                s2++;
        }

        return n == 0 ? 0 : *s1 - *s2;
}

/* End of a file */