stringcmp

include<stdio.h>

int stringcmp(char *s1, char *s2);

int main()
{
    printf("%d", stringcmp("test", "testing"));
}

int stringcmp(char *s1, char *s2)
{
    int i = 0;
    do
    {
        printf("%c, %c\n", s1[i], s2[i]);
        if ((int)s1[i] > (int)s2[i])
            return 1;
        else if ((int)s1[i] < (int)s2[i])
            return -1;
        i++;
    }
    while (s1[i-1] != '\0' && s2[i-1] != '\0');

    return 0;
}