/*Demonstrasi karakter dan string */
#include <stdio.h>
#include <iostream>
#include <string.h>
using namespace std;
string lowerCase(string str){
for(int i = 0; i < str.length(); i++)
str[i] = towlower(str[i]);
return str;
}
int main(){
string str;
cin >> str;
while(str != "STOP"){
cout << lowerCase(str) << '\n';
cin >> str;
}
cout << lowerCase(str) << '\n';
}
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