stack::size
Returns the number of elements in the stack.
size_type size( ) const;
Return Value
The current length of the stack.
Example
// stack_size.cpp
// compile with: /EHsc
#include <stack>
#include <iostream>
int main( )
{
using namespace std;
stack <int> s1, s2;
stack <int>::size_type i;
s1.push( 1 );
i = s1.size( );
cout << "The stack length is " << i << "." << endl;
s1.push( 2 );
i = s1.size( );
cout << "The stack length is now " << i << "." << endl;
}
The stack length is 1. The stack length is now 2.
Requirements
Header: <stack>
Namespace: std