func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s, t;     cin >> s;     cin >> t;     long int n, m, sum;     n = s.size();     m = t.size();     long int count = 0;     if (s.size() == 0 && t.size() == 0) {       cout << 0;     } else if (s.size() == 0 && t.size() != 0) {       cout << t.size();     } else if (t.size() == 0 && s.size() != 0) {       cout << s.size();     } else if (s == t) {       cout << 0;     } else {       while (s[n - 1] == t[m - 1]) {         count++;         n--;         m--;       }       sum = (s.size() - count) + (t.size() - count);       cout << sum;     }     return 0;   }   