empty
Syntax:
#include <stack> bool empty() const;
The empty() function returns true if the stack has no elements, false otherwise.
For example, the following code uses empty() as the stopping condition on a while loop to clear a stack and display its contents in reverse order:
stack<int> s; for( int i = 0; i < 5; i++ ) { s.push(i); } while( !s.empty() ) { cout << s.top() << endl; s.pop(); }
Related Topics: size