Double Dimension Array (Matrix Sum)

As we have learned about array in our previous articles. Here by will go through the example of Double Dimension Array. We have demonstrated Array of Rows and Columns for Matrix. We have used #define R and C for number of rows and columns as a constant. (Macro)

#include<stdio.h>
#include<conio.h>

#define R 3
#define C 3

void main()
{
	int mat[R][C]; //To Store Matrix
	int rowtotal[R]; //To Store Total of Each Row
	int columntotal[C];//To Store Toatl of Each Column
	int i,j; // for loop
	clrscr();

	//Initalized Row and Columns Total to Zero
	for(i=0;i<R;i++)
	{
	rowtotal[i]=0;
	}

	for(i=0;i<C;i++)
	{
	columntotal[i]=0;
	}

	printf("\nEnter %d Values :",R*C);
	for(i=0;i<R;i++)
	{
		for(j=0;j<C;j++)
		{
		scanf("%d",&mat[i][j]);
		rowtotal[i] += mat[i][j];  //i for row
		columntotal[j] += mat[i][j]; //j for column
		}
	}

	//Printing Matrix and Totals

	for(i=0;i<R;i++)
	{
		for(j=0;j<C;j++)
		{
		printf("%4d",mat[i][j]);
		}
		printf(": %d",rowtotal[i]); //Row Total Print
		printf("\n");
	}
	printf("\n--------------\n");
	for(i=0;i<C;i++)
	{
		printf("%4d",columntotal[i]);
	}
	getch();
}

• #define is a Macro that defines Constant Value for Entire Program
• In Double Dimension Array Index of element is (r,c) means
• (0,0) (0,1) (0,2)
• (1,0) (1,1) (1,2) …