C++ program to convert kth character to lowercase

Suppose we have a string S with N characters. S contains only three types of characters 'A', 'B' or 'C'. We also have another integer K. We have to print S after lowercasing the Kth character in it.

So, if the input is like K = 2; S = "AABACC", then the output will be "AaBACC"

Steps

To solve this, we will follow these steps −

S[K - 1] = S[K - 1] + 32
return S

Example

Let us see the following implementation to get better understanding −

#include <bits/stdc++.h>
using namespace std;

string solve(int K, string S){
   S[K - 1] = S[K - 1] + 32;
   return S;
}
int main(){
   int K = 2;
   string S = "AABACC";
   cout << solve(K, S) << endl;
}