how to change string to lowercase and uperCase in c++
#include <iostream>
#include <algorithm>
#include <string>
using namespace std;
string uperCase(string input){
transform(input.begin(), input.end(), input.begin(), ::toupper);
return input;
};
string lowerCase(string input){
transform(input.begin(), input.end(), input.begin(), ::tolower);
return input;
};
int main()
{
string input;
cout <<"Please enter: ";
cin >> input;
cout << "Uper Case: "<<uperCase(input) << endl;
cout << "Lower Case: "<<lowerCase(input) << endl;
}