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C++ Program for Frequencies of even and odd numbers in a matrix

  • Last Updated : 13 Jan, 2022

Given a matrix of order m*n then the task is to find the frequency of even and odd numbers in matrix 
Examples: 
 

Input : m = 3, n = 3
        { 1, 2, 3 }, 
        { 4, 5, 6 }, 
        { 7, 8, 9 }
Output : Frequency of odd number =  5 
         Frequency of even number = 4


Input :   m = 3, n = 3
         { 10, 11, 12 },
         { 13, 14, 15 },
         { 16, 17, 18 }
Output : Frequency of odd number  =  4 
         Frequency of even number  = 5

 

CPP




// C++ Program to Find the frequency
// of even and odd numbers in a matrix
#include<bits/stdc++.h>
using namespace std;
  
#define MAX 100
  
// function for calculating frequency
void freq(int ar[][MAX], int m, int n)
{
    int even = 0, odd = 0;
      
    for (int i = 0; i < m; ++i)
    {
        for (int j = 0; j < n; ++j)
        {
            // modulo by 2 to check
            // even and odd
            if ((ar[i][j] % 2) == 0)
                ++even;
            else
                ++odd;
        }
    }
      
    // print Frequency of numbers
    printf(" Frequency of odd number = %d 
", odd);
    printf(" Frequency of even number = %d 
", even);
}
  
// Driver code
int main()
{
    int m = 3, n = 3;    
      
    int array[][MAX] = { { 1, 2, 3 },
                        { 4, 5, 6 },
                        { 7, 8, 9 } };
  
    freq(array, m, n);
    return 0;
}        

Output: 
 

 Frequency of odd number = 5  
 Frequency of even number = 4

Please refer complete article on Frequencies of even and odd numbers in a matrix for more details!


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