C++ String Concatenation

In this C++ tutorial, you will learn how to concatenate two or more strings using String Concatenation Operator, with examples.

Concatenate Strings

To concatenate two or more strings in C++, use string concatenation operator +.

Syntax

The syntax to concatenate two strings str1 and str2 is

str1 + str2

The above expression returns the resulting string of the two strings concatenated in the given order.

We may concatenate more than two strings in a single statement.

str1 + str2 + str3

Examples

1. Concatenate two strings

In the following program, we take two strings: str1 and str2 and concatenate them using addition operator.

C++ Program

#include <iostream>
using namespace std;

int main() {
    string str1 = "apple";
    string str2 = " banana";
    string result = str1 + str2;
    cout << result << endl;
}

Output

apple banana
Program ended with exit code: 0

2. Concatenate multiple strings

In the following program, we take three strings: str1 , str2 and str3 and concatenate them in the same order and store the result in variable result.

C++ Program

#include <iostream>
using namespace std;

int main() {
    string str1 = "apple";
    string str2 = " banana";
    string str3 = " cherry";
    string result = str1 + str2 + str3;
    cout << result << endl;
}

Output

apple banana cherry
Program ended with exit code: 0

Conclusion

In this C++ Tutorial, we learned how to concatenate two or more strings in C++, with examples.