C++ Queue Library - operator>= Function

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Description

The C++ function std::queue::operator>= tests whether first queue is greater than or equal to other or not. Comparison is done by applying corresponding operator to the underlying container.

Declaration

Following is the declaration for std::queue::operator>= function form std::queue header.

C++98

template <class T, class Container>
bool operator>= (const queue<T,Container>& q1, const queue<T,Container>& q2);

Parameters

• q1 − First queue object.

• q2 − Second queue object.

Return value

Returns true if first queue is greater than or equal to second otherwise false.

Exceptions

This member function never throws exception.

Time complexity

Linear i.e. O(n)

Example

The following example shows the usage of std::queue::operator>= function.

#include <iostream>
#include <queue>

using namespace std;

int main(void) {
   queue<int> q1, q2;

   for (int i = 0; i < 5; ++i) {
      q1.push(i);
      q2.push(i);
   }

   if (q1 >= q2)
      cout << "q1 is greater than or equal to q2." << endl;

   q2.emplace(6);

   if (!(q1 >= q2))
      cout << "q1 is not greater than or equal to q2." << endl;

   return 0;
}

Let us compile and run the above program, this will produce the following result −

q1 is greater than or equal to q2.
q1 is not greater than or equal to q2.