ref: a82c479140df86cfdb59694cdbd53599b530f6ab dir: /libc/strcmp.c/
int strcmp(char *s1, char *s2) { char c1, c2; while(1) { c1 = *s1++; c2 = *s2++; if(c1 != c2) { if(c1 > c2) return 1; return -1; } if(c1 == 0) return 0; } }