#include <cctype>
#include <iostream>
#include <string>
using namespace std;
 
string stripcase(string instring){
     string buffer = "";
     for(int i = 0; i < instring.length(); i++){
          buffer += tolower(instring[i]);
     }
     return buffer;
}
 
int main()
{
     string input1 = "winSton Chruchill"; //this would be set via user input of course, just an example
 
     string correct1 [2] = {"Winston Churchill", "Chruchill"};
 
     for(int i = 0; i < 2; i++)
     {
          if(stripcase(correct1[i]) == stripcase(input1)){
               cout << "Congratulations, you got it!";     
          }
      }
 
     return 0;
)

buffer += tolower(instring[i]);