second

#include <stdio.h>
#include <ctype.h>

int mystrspccmp(const char *str1, const char *str2) {
    const char *s1 = str1, *s2 = str2;
    while (isspace (*s1)) {
        ++s1;
    }
    while (isspace (*s2)) {
        ++s2;
    }
    while (*s1 == *s2 && *s1) {
        ++s1;
        ++s2;
        while (isspace (*s1)) {
            ++s1;
        }
        while (isspace (*s2)) {
            ++s2;
        }
    }
    return (unsigned)*s1 - (unsigned)*s2;
}

int
main(void) {
    char *s = "ubuijb", *t = "d";
    printf("%d", mystrspccmp(s, t));
}