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();
}
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