C++ Functional Library - modulus

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Description

It is a modulus function object class and binary function object class whose call returns the result of the modulus operation between its two arguments (as returned by operator %).

Declaration

Following is the declaration for std::modulus.

template <class T> struct modulus;

C++11

template <class T> struct modulus;

Parameters

T − It is a type of the arguments and return type of the functional call.

Return Value

none

Exceptions

noexcep − It doesn't throw any exceptions.

Example

In below example explains about std::modulus.

#include <iostream>
#include <functional>
#include <algorithm>

int main () {
   int numbers[]={1,20,1003,42,56};
   int remainders[5];
   std::transform (numbers, numbers+5, remainders, std::bind2nd(std::modulus<int>(),2));
   for (int i=0; i<5; i++)
      std::cout << numbers[i] << " is " << (remainders[i]==0?"even":"odd") << '\n';
   return 0;
}

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

1 is odd
20 is even
1003 is odd
42 is even
56 is even