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C++ Vector clear() function

C++ Vector clear() 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 clear()

This function removes all the elements from the vector.

Syntax

Consider a vector v. Syntax would be:

v.clear();

Parameter

It does not contain any parameter.

Return value

It does not return any value.

Example

Let's see a simple example.

#include<iostream>
#include<vector>
using namespace std;
int main()
{
vector<int>  v{1,2,3,4,5};
cout<<"Elements of v vector are :";
for(int i=0;i<v.size();i++)
cout<<v[i]<<" ";
v.clear();
for(int i=0;i<v.size();i++)
cout<<v[i];
	return 0;
}

Output:

Elements of v vector are :1 2 3 4 5

In this example, clear() function removes all the elements from the vector.

Next TopicC++ Vector




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