to_string を使ってみる (C++)
C++
Published: 2019-12-24

やったこと

to_string を使ってみます。

確認環境

$ g++ --version
g++ (Homebrew GCC 9.2.0) 9.2.0
Copyright (C) 2019 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

調査

test.cpp

#include <bits/stdc++.h>
using namespace std;

int main() {
    int d = 123;

    cout << typeid(d).name() << endl;
    cout << to_string(d) << endl;
    cout << typeid(to_string(d)).name() << endl;
}

出力結果

i
123
NSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE

参考