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Ratio Manipulations in C++ | Set 2 (Comparison)
• Last Updated : 29 May, 2017

Manipulating ratio arithmetic has been discussed in Set 1 below

Ratio Manipulations in C++ | Set 1(Arithmetic)

In this article comparison of rations is discussed.

1. ratio_equal :- This templete alias checks if the ratios in its arguments are equal. Returns true if equal, else returns false. It returns a boolean member constant “value”.

1. ratio_not_equal :- This templete alias checks if the ratios in its arguments are not equal. Returns true if not equal, else if equal returns false. It returns a boolean member constant “value”.

 `// C++ code to demonstrate the working of``// ratio_equal and ratio_not_equal``#include``#include // for ratio manipulation``using` `namespace` `std;``int` `main()``{``    ``// Declaring ratios ``    ``typedef` `ratio<10, 100> ratio1;``    ``typedef` `ratio<1, 10> ratio2;``     ` `    ``// Checking if ratios are equal using ratio_equal``    ``ratio_equal::value ? ``              ``cout << ``"Ratios are equal"` `:``              ``cout << ``"Ratios are not equal"``;``    ``cout << endl;``      ` `     ``// Checking if ratios are not equal using ratio_not_equal``    ``ratio_not_equal::value ? ``               ``cout << ``"Ratios are not equal"` `:``               ``cout << ``"Ratios are equal"``;``     ` `    ``return` `0;``     ` `}`

Output:

```Ratios are equal
Ratios are equal
```

3. ratio_greater :- This temporary alias check if ratio1 is greater than ratio2. It returns a boolean member constant “value” which returns true if ratio1 is greater than ratio2 else returns false.

4. ratio_less :- This temporary alias check if ratio1 is less than ratio2. It returns a boolean member constant “value” which returns true if ratio1 is less than ratio2 else returns false.

 `// C++ code to demonstrate the working of``// ratio_greater and ratio_less``#include``#include // for ratio manipulation``using` `namespace` `std;``int` `main()``{``    ``// Declaring ratios ``    ``typedef` `ratio<10, 100> ratio1;``    ``typedef` `ratio<11, 100> ratio2;``     ` `    ``// Checking if ratio1 is greater than ratio2 ``    ``// using ratio_greater``    ``ratio_greater::value ? ``             ``cout << ``"ratio1 is greater than ratio2"` `:``             ``cout << ``"ratio1 is not greater than ratio2"``;``    ``cout << endl;``      ` `    ``// Checking if ratio1 is less than ratio2 ``    ``// using ratio_less``    ``ratio_less::value ? ``             ``cout << ``"ratio1 is less than ratio2"` `:``             ``cout << ``"ratio1 is not less than ratio2"``;``    ``cout << endl;``     ` `    ``return` `0;``     ` `}`

Output:

```ratio1 is not greater than ratio2
ratio1 is less than ratio2
```

5. ratio_greater_equal :- This temporary alias check if ratio1 is greater or equal than ratio2. It returns a boolean member constant “value” which returns true if ratio1 is greater or equal than ratio2 else returns false.

6. ratio_less_equal :- This temporary alias check if ratio1 is less or equal than ratio2. It returns a boolean member constant “value” which returns true if ratio1 is less or equal than ratio2 else returns false.

 `// C++ code to demonstrate the working of``// ratio_greater_equal and ratio_less_equal``#include``#include // for ratio manipulation``using` `namespace` `std;``int` `main()``{``    ``// Declaring ratios ``    ``typedef` `ratio<10, 100> ratio1;``    ``typedef` `ratio<1, 10> ratio2;``     ` `    ``// Checking if ratio1 is greater or equal than ratio2 ``    ``// using ratio_greater_equal``    ``ratio_greater_equal::value ? ``           ``cout << ``"ratio1 is greater or equal than ratio2"` `:``           ``cout << ``"ratio1 is not greater or equal than ratio2"``;``    ``cout << endl;``      ` `    ``// Checking if ratio1 is less or equal than ratio2 ``    ``// using ratio_less_equal ``    ``ratio_less_equal::value ? ``           ``cout << ``"ratio1 is less or equal than ratio2"` `:``           ``cout << ``"ratio1 is not less or equal than ratio2"``;``    ``cout << endl;``     ` `    ``return` `0;``     ` `}`

Output:

```ratio1 is greater or equal than ratio2
ratio1 is less or equal than ratio2
```

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