## 1.09.2012

### Sum of matrix

Q. Write a C program to accept value of matrix and print out the sum of matrix.
OR
Q. Give a example of 2d array with suitable arithmetic operation.

Ans.

/*program of sum of two matrix*/
#include<stdio.h>
#include<conio.h>
#define MAX 3
void input_mat(int [MAX][MAX], int, int);
void show_mat(int [MAX][MAX], int, int);
void sum_mat(int [MAX][MAX],int [MAX][MAX],int [MAX][MAX],int,int);
int main()
{
int x[MAX][MAX],y[MAX][MAX],z[MAX][MAX];
int row,col;
printf("Enter no. of rows and columns : ");
scanf("%d%d",&row, &col);
printf("Enter values in first matrix :\n");
input_mat(x,row,col);
printf("Enter values in second matrix :\n");
input_mat(y,row,col);
sum_mat(x,y,z,row,col);
printf("\nDisplay sum of two matrices :");
show_mat(z,row,col);
getch();
return 0;
}

void input_mat(int matA[MAX][MAX], int r, int c)
{
int i,j;
for(i=0; i<r; i++)
{
for(j=0;j<c; j++)
scanf("%d",&matA[i][j]);
}
}

void sum_mat(int matA[MAX][MAX],int matB[MAX][MAX],int matC[MAX][MAX],int r,int c)
{
int i,j;
for(i=0; i<r; i++)
{
for(j=0;j<c; j++)
matC[i][j]=matA[i][j]+matB[i][j];
}
}

void show_mat(int mat[MAX][MAX], int r, int c)
{
int i,j;
for(i=0; i<r; i++)
{
for(j=0;j<c; j++)
printf(" %d",mat[i][j]);
printf("\n");
}
}

Output:-

Enter no. of rows and columns : 3 3
Enter values in First matrix :
4 5 3
2 1 9
6 7 5
Enter values in second matrix :
1 3 2
7 6 4
2 1 0
Display sum of two matrices :
5 8 5
9 7 13
8 8 5

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