Two dimensional array implementation using pointers

Posted on Apr 12, 2020

C Program to access a two dimensional array using pointer

Program

#include<stdio.h>
#include<conio.h>
#define MAX 50

void print_matrix(int mat[MAX][MAX], int rows, int cols);
void input_matrix(int mat[MAX][MAX], int rows, int cols);

void main()
{
	int mat[MAX][MAX];
    int rows, cols;

    printf("Enter the number of rows in the matrix\t:");
    scanf("%d",&rows);

    printf("Enter the number of columns in the matrix\t:");
    scanf("%d",&cols);

    printf("\nEnter elements in the matrix\n");
    input_matrix(mat, rows, cols);

    printf("\nElements of the matrix are\n");
    print_matrix(mat, rows, cols);

    getch();
}

void input_matrix(int mat[MAX][MAX], int rows, int cols)
{
    int i, j;
    for(i=0;i<rows;i++)
    {
        for(j=0;j<cols;j++)
        {
            scanf("%d",(*(mat+i)+j));
        }
    }
}

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

Output

Enter the number of rows in the matrix  :3
Enter the number of columns in the matrix       :3

Enter elements in the matrix
1
2
3
4
5
6
7
8
9

Elements of the matrix are
1 2 3
4 5 6
7 8 9

Explanation