C++ Vector pop_back() function

by Online Tutorials Library July 22, 2022

C++ Vector pop_back()

It deletes the last element and reduces the size of the vector by one.

Syntax

Consider a vector v.Syntax would be:

Parameter

It does not contain any parameter.

Return value

It does not return any value.

The following illustration show how pop_back() function works :

This illustration shows how last element of the vector is deleted using pop_back() function.

Example

Let’s see a simple example.

  #include<iostream>  #include<vector>  using namespace std;  int main()  {  vector<string> v{“welcome”,”to”,”tutorAspire”,”tutorial”};  cout<<“Initial string is :”;  for(inti=0;i<v.size();i++)  cout<<v[i]<<” “;  cout<<‘n’;  cout<<“After deleting last string, string is :”;  v.pop_back();  for(int i=0;i<v.size();i++)  cout<<v[i]<<” “;  return 0;  }  

Output:

Initial string is :welcome to TutorAspire tutorial   After deleting last string, string is :welcome to TutorAspire

In this example, last string is being removed using pop_back() function.

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C++ Vector pop_back() function

C++ Vector pop_back()

Syntax

Parameter

Return value

Example

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