王子夫

1. #include<bits/stdc++.h>
   
2. using namespace std;
   
3. int main(){
   
4.     string s;
   
5.     int n;
   
6.     cin >> s >> n;
   
7.     cout << "The letter that was selected is: ";
   
8.     if (s[n]>='a'){
   
9.         s[n] -= 32;
   
10.     }
    
11.     else if (s[n]<='Z'){
    
12.         s[n] += 32;
    
13.     }
    
14.     cout << s[n] << endl << s << endl;
    
15.     return 0;
    
16. }

複製代碼