C++ Vector erase() function

C++ Vector erase() function tutorial for beginners and professionals with examples on assign(), at(), back(), begin(), capacity(), cbegin(), cend(), clear(), crbegin(), crend(), data(), emplace(), end(), front(), rbegin(), resize(), size(), swap() etc.

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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:

v.erase(pos);
v.erase(start_iterator,end_iterator);

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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