func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     char instr[51], outstr[51] = {}, ch;     int n, i;     cin >> instr;     cin >> n;     for (i = 0; i < strlen(instr); i++) {       if (instr[i] < 97) instr[i] += 32;     }     for (i = 0; i < strlen(instr); i++) {       ch = instr[i];       if (int(ch) < (n + 97)) {         outstr[i] = ch - 32;       } else {         outstr[i] = ch;       }     }     cout << outstr;   }   