/* 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; } }