std::queue<T,Container>::size - cppreference.com

From cppreference.com

size_typesize()const;Returns the number of elements in the container adaptor. Equivalent to: return

c

.size().

Return value

The number of elements in the container adaptor.

Complexity

Constant.

Example

Run this code

#include<cassert>#include<queue>intmain(){std::queue<int>queue;assert(queue.size()==0);constintcount=8;for(inti=0;i!=count;++i)queue.push(i);assert(queue.size()==count);}See also

checks whether the container adaptor is empty
(public member function)

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(C++17)(C++20)

returns the size of a container or array
(function template)

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