Find the frequency of odd numbers and even numbers in a matrix

Posted on Apr 26, 2020

C program to find the frequency of odd numbers and even numbers in the input of a matrix.

Program

#include<stdio.h>
#include<conio.h>
#define MAX 10

void read_matrix(int mat[MAX][MAX], int row, int col)
{
    int i, j;
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            printf("Element [%d][%d]\t:",i,j);
            scanf("%d",&mat[i][j]);
        }
    }
}

void print_matrix(int mat[MAX][MAX], int row, int col)
{
    int i, j;
    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            printf("%d\t",mat[i][j]);
        }
        printf("\n");
    }
}

void main()
{
    int mat[MAX][MAX], mat1[MAX][MAX];
    int row, col, i, j, n_even, n_odd;

    printf("Enter the number of rows\t:");
    scanf("%d",&row);
    printf("Enter the number of columns\t:");
    scanf("%d",&col);

    printf("Enter the elements of the matrix\n");
    read_matrix(mat, row, col);

    printf("\nMatrix entered is\n");
    print_matrix(mat, row, col);

    n_even = 0;
    n_odd = 0;

    for(i=0;i<row;i++)
    {
        for(j=0;j<col;j++)
        {
            if(mat[i][j]%2 == 0)
            {
                n_even++;
            }
            else
            {
                n_odd++;
            }
        }
    }

    printf("\nTotal count of even numbers\t:%d",n_even);
    printf("\nTotal count of odd numbers\t:%d",n_odd);

    getch();
}

Output

Enter the number of rows        :3
Enter the number of columns     :4
Enter the elements of the matrix
Element [0][0]  :1
Element [0][1]  :2
Element [0][2]  :3
Element [0][3]  :4
Element [1][0]  :5
Element [1][1]  :6
Element [1][2]  :7
Element [1][3]  :8
Element [2][0]  :9
Element [2][1]  :12
Element [2][2]  :32
Element [2][3]  :34

Matrix entered is
1       2       3       4
5       6       7       8
9       12      32      34

Total count of even numbers     :7
Total count of odd numbers      :5