C++ <string> - pop_back() Function

The C++ string::pop_back function is used to delete the last character of the string. Every deletion of character results into reducing the string size by one unless the string is empty.

Syntax

C++11

void pop_back();

Parameters

No parameter is required.

Return Value

None.

Time Complexity

Constant i.e, Θ(1).

Example:

In the example below, the string::pop_back function is used to delete last character of the string called str.

#include <iostream>
#include <string>

using namespace std;
 
int main (){
  string str = "ALPHA";

  //deletes last character of the string
  str.pop_back();
  //deletes next last character of the string
  str.pop_back();

  cout<<str;

  return 0;
}

The output of the above code will be:

ALP

❮ C++ <string> Library