#include <stdio.h>
int strlen(char *s){
char *p = s;
while(*p != '\0') p++;
return p - s;
}
void strcpy(char *s, char *t){
while(*s++ = *t++)
;
}
int strcmp(char *s, char *t){
while(*s == *t){
printf("%c, %c\n", *s, *t);
if(*s == '\0')
return 0;
++s;
++t;
}
return *s - *t;
}
int main(){
int p;
char s[5] = "hooy";
char t[5];
char *r = "hooz";
printf("%d\n", strcmp(s, r));
scanf("%d", &p);
return 0;
}
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