Sentry Answers>C++>

Convert integer to string in C++

Convert integer to string in C++

David Y.

—

The Problem

What is the best way to convert an integer to a string in modern C++?

The Solution

C++11 introduced std::to_string, which is designed for this purpose. For example:

Click to Copy
#include <string>

int main() {
    int myInt = 123;
    std::string myIntString = std::to_string(myInt);
}

To do the opposite conversion, from a string to an int, we can use std::stoi:

Click to Copy
#include <string>
#include <iostream>

int main() {
    std::string myString = "123";
    int myStringInt = std::stoi(myString);
    myStringInt += 1;
    std::cout << myStringInt; // will print 124
}
  • SentryC++ Error Monitoring
  • Syntax.fmListen to the Syntax Podcast
  • Syntax.fm logo
    Listen to the Syntax Podcast

    Tasty treats for web developers brought to you by Sentry. Get tips and tricks from Wes Bos and Scott Tolinski.

    SEE EPISODES

Considered “not bad” by 4 million developers and more than 100,000 organizations worldwide, Sentry provides code-level observability to many of the world’s best-known companies like Disney, Peloton, Cloudflare, Eventbrite, Slack, Supercell, and Rockstar Games. Each month we process billions of exceptions from the most popular products on the internet.

learn more about sentryjoin our discord
© 2024 • Sentry is a registered Trademark
of Functional Software, Inc.