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Stdle #129 · strings · 2026-10-13

What does this C++ snippet output?

A past puzzle — fully playable. 4 attempts, hints on wrong guesses.

#include <iostream>
#include <string>
int main() {
std::string s = "abc";
for (char& c : s) c = c + 1;
std::cout << s << "\n";
}
Strings
4 attempts left

Answer & explanation