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empty
Syntax: #include <queue> bool empty() const; The empty() function returns true if the queue has no elements, false otherwise. For example, the following code uses empty() as the stopping condition on a (C/C++ Keywords) while loop to clear a queue and display its contents in reverse order: vector<int> v;
for( int i = 0; i < 5; i++ ) {
v.push_back(i);
}
while( !v.empty() ) {
cout << v.back() << endl;
v.pop_back();
}
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