convert uppercase to lowercase
#include <iostream>
#include <string>
using namespace std;
int main() {
string uppercase = "HELLO";
cout << "Uppercase: " << uppercase << endl;
for (int i = 0; i < uppercase.length(); i++) {
if (uppercase[i] >= 'A' && uppercase[i] <= 'Z') {
uppercase[i] = tolower(uppercase[i]);
}
}
cout << "Lowercase: " << uppercase << endl;
return 0;
}