C++ Vector erase() function

by Online Tutorials Library July 22, 2022

C++ Vector erase()

It deletes the specified elements pointed by the iterator

Erases third element using erase() function

Syntax

Consider a vector v. Syntax would be:

Parameter

pos: It defines the position of the element which is to be removed from the vector.

(start_iterator,end_iterator) : It defines the range of the elements to be removed from the vector.

Return value

It does not return any value.

Example 1

Let’s see a simple example.

  #include<iostream>  #include<vector>  using namespace std;  int main()  {  vector<char> v{‘C’,’+’,’#’};  v.erase(v.begin()+1);  for(int i=0;i<v.size();i++)  cout<<v[i];  return 0;  }  

Output:

C#

Example 2

Let’s see a simple example

  #include<iostream>  #include<vector>  using namespace std;  int main()  {  vector<string>  fruit{“mango”,”apple”,”strawbery”,”kiwi”,”banana”};  cout<<“fruit names are :”;  for(int i=0;i<fruit.size();i++)  cout<<fruit[i]<<” “;  cout<<‘n’;  fruit.erase(fruit.begin()+1,fruit.begin()+3);  cout<<“After removing apple and strawbery fruits,”<<‘n’;  for(int i=0;i<fruit.size();i++)  cout<<fruit[i]<<” “;  return 0;  }  

Output:

fruit names are :mango, apple,strawberry, kiwi, banana   After removing apple and strawbery fruits,  Mango, kiwi, banana

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