How to Convert Integer to String in C++ - Step by Step Examples

◀ Previous Next ▶

How to Convert Integer to String in C++ ?

Answer

In C++, you can convert an integer to a string using the std::to_string() function or by using string streams.

✐ Examples

1 Convert Integer to String using std::to_string()

In this example,

We declare an integer variable named num and assign it a value of 42.
We then use the std::to_string() function to convert the integer num to a string and store the result in the string variable strNum.
The std::to_string() function converts the integer to its string representation.
Finally, we print the string representation of the integer to the console.

C++ Program

// Convert Integer to String using std::to_string()
#include <iostream>
#include <string>
int main() {
    int num = 42;
    std::string strNum = std::to_string(num);
    std::cout << "String representation of integer: " << strNum << std::endl;
    return 0;
}

Output

String representation of integer: 42

2 Convert Negative Integer to String using String Streams

In this example,

We declare a negative integer variable named negativeNum with a value of -10.
We then use string streams to convert the negative integer negativeNum to a string and store the result in the string variable strNegativeNum.
String streams provide a convenient way to convert various types to strings.
Finally, we print the string representation of the negative integer to the console.

C++ Program

// Convert Negative Integer to String using String Streams
#include <iostream>
#include <sstream>
int main() {
    int negativeNum = -10;
    std::stringstream ss;
    ss << negativeNum;
    std::string strNegativeNum = ss.str();
    std::cout << "String representation of negative integer: " << strNegativeNum << std::endl;
    return 0;
}

Output

String representation of negative integer: -10

Summary

In this tutorial, we learned How to Convert Integer to String in C++ language with well detailed examples.

◀ Previous Next ▶

C++ Tutorials

C++ How-Tos

How to Convert Integer to String in C++ - Step by Step Examples

How to Convert Integer to String in C++ ?

Answer

✐ Examples

1 Convert Integer to String using std::to_string()

C++ Program

Output

2 Convert Negative Integer to String using String Streams

C++ Program

Output

Summary

More C++ Strings Tutorials