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