func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int h1, t1, h2, t2, ansh, anst;     scanf( %2d:%2d , &h1, &t1);     scanf( %2d:%2d , &h2, &t2);     if (t1 < t2) {       h1--, t1 += 60;     }     anst = t1 - t2;     ansh = h1 - h2;     if (ansh < 0) ansh += 24;     printf( %02d:%02d n , ansh, anst);     return 0;   }   