func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a, b, d;     char c;     cin >> a >> c >> b;     cin >> d;     for (int i = 1; i <= d; i++) {       b += 1;       if (b == 60) {         a++;         b = 0;       }       if (a == 24) {         a = 0;       }     }     if (a >= 0 && a < 10 && b >= 0 && b < 10) {       cout <<  0  << a << c <<  0  << b << endl;     } else if (a == 0 && b == 0) {       cout <<  00  << c <<  00  << endl;     } else if (b >= 0 && b < 10) {       cout << a << c <<  0  << b << endl;     } else if (a >= 0 && a < 10) {       cout <<  0  << a << c << b << endl;     } else {       cout << a << c << b << endl;     }   }   