#include <iostream>
#include <string>
#include <algorithm>
using namespace std;
string StrLower(string str) {
transform(str.begin(), str.end(), str.begin(), [](char c) -> char { return tolower(c); });
return str;
}
int main() {
cout << StrLower("TESTE");
}
//https://pt.stackoverflow.com/q/293208/101
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