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
- Listen to the Syntax Podcast
![Syntax.fm logo]()
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.