wcschr() function in C++

Modulus function in C++ STL

Last Updated : 14 Sep, 2018

Modulus function is used to return the value of the modulus between its two arguments. It works same as modulus operator works.

template  struct modulus : binary_function  
{
  T operator() (const T& x, const T& y) const 
  {
   return x%y;
  }
};

Member types:

Type of first argument
Type of second argument
Type of result returned by member operator

Note: We must include library ‘functional’ and ‘algorithm’ to use modulus and transform.

Bewlo programs illustrate the working of modulus function:

// C++ program to implement modulus function 
#include <algorithm> // transform 
#include <functional> // modulus, bind2nd 
#include <iostream> // cout 
using namespace std; 
  
int main() 
{ 
    // defining the array 
    int array[] = { 8, 6, 3, 4, 1 }; 
  
    int remainders[5]; 
  
    // transform function that helps to apply 
    // modulus between the arguments 
    transform(array, array + 5, remainders, 
              bind2nd(modulus<int>(), 2)); 
  
    for (int i = 0; i < 5; i++) 
        // printing the results while checking 
        // whether no. is even or odd 
        cout << array[i] << " is a "
             << (remainders[i] == 0 ? "even" : "odd") 
             << endl; 
  
    return 0; 
} 

Output:

8 is a even
6 is a even
3 is a odd
4 is a even
1 is a odd

// C++ program to implement modulus function 
#include <algorithm> // transform 
#include <functional> // modulus, bind2nd 
#include <iostream> // cout 
#include <iterator> 
#include <vector> 
using namespace std; 
  
int main() 
{ 
  
    // Create a std::vector with elements 
    // {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} 
    vector<int> v; 
    for (int i = 0; i < 10; ++i) 
        v.push_back(i); 
  
    // Perform a modulus of two on every element 
    transform(v.begin(), v.end(), v.begin(), 
              bind2nd(modulus<int>(), 2)); 
  
    // Display the vector 
    copy(v.begin(), v.end(), 
         ostream_iterator<int>(cout, " ")); 
    cout << endl; 
  
    return 0; 
} 

Output:

0 1 0 1 0 1 0 1 0 1

wcschr() function in C++

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