#include <stdio.h>
int main(){    int a=12;
    int b=34;
    int s=a-b;
printf("s=%d",s>=0?s:-s);
return 0;
}

#include <stdio.h>
int main(){    int a=12;
    int b=34;
    int s=a-b;
printf("s=%d",s>=0?s:-s);
return 0;
}