ratio_equal() in C++ with examples

The ratio_equal() is an inbuilt function in C++ STL that checks if two given ratios are equal or not.

Syntax:

template < class ratio1_name, class ratio2_name > ratio_equal

Template Parameters: The function accepts two template parameters ratio1 and ratio2 which are to be compared.

Return value: The function returns true if the ratios are equal otherwise it returns false.

Below programs illustrate the ratio_equal() function:

Program 1:

// C++ program to illustrate the
// ratio_equal function
#include <iostream>
#include <ratio>
using namespace std;
int main()
{
    typedef ratio<3, 9> ratio1;
    typedef ratio<1, 3> ratio2;

    // If both the ratios are same
    if (ratio_equal<ratio1, ratio2>::value)
        cout << "Both ratio are equal";
    else
        cout << "Both ratio are not equal";

    return 0;
}

Output:

Both ratio are equal

Program 2:

// C++ program to illustrate the
// ratio_equal function
#include <iostream>
#include <ratio>
using namespace std;
int main()
{
    typedef ratio<1, 2> ratio1;
    typedef ratio<5, 4> ratio2;

    // If both the ratios are same
    if (ratio_equal<ratio1, ratio2>::value)
        cout << "Both ratio are equal";
    else
        cout << "Both ratio are not equal";

    return 0;
}

Output:

Both ratio are not equal