vector::clear

Erases the elements of the vector.

void clear( );

Example

// vector_clear.cpp
// compile with: /EHsc
#include <vector>
#include <iostream>
using namespace std;
int main( )
{
vector <int> vec;

    vec.push_back(10);
    vec.push_back(20);
    vec.push_back(30);

    cout << "The size of vec is " << vec.size() << endl;
    cout << "The capacity of vec is " << vec.capacity() << endl;
    vec.clear();
    cout << "The size of vec after clearing is " << vec.size() << endl;
    cout << "The capacity of vec after clearing is " << vec.capacity() << endl;}

The size of vec is 3
The capacity of vec is 3
The size of vec after clearing is 0
The capacity of vec after clearing is 3

Requirements

Header: <vector>

Namespace: std

See Also

Reference

vector Class

Standard Template Library