list::clear
Erases all the elements of a list.
void clear( );
Example
// list_clear.cpp
// compile with: /EHsc
#include <list>
#include <iostream>
int main() {
using namespace std;
list <int> c1;
c1.push_back( 10 );
c1.push_back( 20 );
c1.push_back( 30 );
cout << "The size of the list is initially " << c1.size( ) << endl;
c1.clear( );
cout << "The size of list after clearing is " << c1.size( ) << endl;
}
The size of the list is initially 3 The size of list after clearing is 0
Requirements
Header: <list>
Namespace: std