func_code_string: #include <bits/stdc++.h>   int main() {     int sign = 1;     int current = 0;     int value = 0;     for (char c;   n  != (c = getchar());) {       if (c ==  +  or c ==  - ) {         value += sign * current;         sign = (c ==  +  ? 1 : -1);         current = 0;       }       current *= 10;       current += c -  0 ;     }     printf( %d , value + sign * current);     return 0;   }   