C++ String Library - operator+=

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Description

It extends the string by appending additional characters at the end of its current value.

Declaration

Following is the declaration for std::string::operator+=

string& operator+= (const string& str);

C++11

string& operator+= (const string& str);

Parameters

• str − It is a string object.

• c − It is a character object.

Return Value

It returns *this.

Exceptions

if an exception is thrown, there are no changes in the string.

Example

In below example for std::string::operator+=.

#include <iostream>
#include <string>

int main () {
   std::string name ("Sairamkrishna");
   std::string family ("Mammahe");
   name += " Prasad. ";
   name += family;
   name += '\n';

   std::cout << name;
   return 0;
}

Sairamkrishna Prasad. Mammahe