func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s;     cin >> s;     int sign = 1, tmp = 0, ans = 0;     for (int i = 0; i < s.size(); i++) {       if (!(s[i] >=  0  && s[i] <=  9 )) {         ans += tmp * sign;         if (s[i] ==  - )           sign = -1;         else           sign = 1;         tmp = 0;       }       tmp = (s[i] -  0 ) + tmp * 10;     }     ans += tmp * sign;     cout << ans << endl;     return 0;   }   