# Program to perform addition of two 2 by 2 matrix

An array is a collective name given to a group of similar variables. In this program we will accept two 2-D array (2 by 2 Matrix) as input from the user. This program will then perform addition of two 2 by 2 matrix. It will then display the result after adding two matrix.

#include
#include

void main(){
int arr1[10][10], arr2[10][10];
int arr3[][3]={
{0,0,0},
{0,0,0},
{0,0,0}
};
int i, j;
clrscr();
printf("Enter 3x3 array 1:\n");
for(i=0;i<3;i++){
for(j=0;j<3;j++){
printf("Enter element %d x %d:",i,j);
scanf("%d",&arr1[i][j]);
}
}
printf("Enter 3x3 array 2:\n");
for(i=0;i<3;i++){
for(j=0;j<3;j++){
printf("Enter element %d x %d:",i,j);
scanf("%d",&arr2[i][j]);
}
}

for(i=0;i<3;i++){
for(j=0;j<3;j++){
arr3[i][j]=arr1[i][j] + arr2[i][j];
}
}

printf("Addition of Array 1 and Array 2 is: \n");
for(i=0;i<3;i++){
for(j=0;j<3;j++){
printf("\t%d",arr3[i][j]);
}
printf("\n");
}
getch();
}

Output:

Enter 3x3 array 1:
Enter element 0 x 0:1
Enter element 0 x 1:1
Enter element 0 x 2:1
Enter element 1 x 0:1
Enter element 1 x 1:1
Enter element 1 x 2:1
Enter element 2 x 0:1
Enter element 2 x 1:1
Enter element 2 x 2:1
Enter 3x3 array 2:
Enter element 0 x 0:1
Enter element 0 x 1:1
Enter element 0 x 2:1
Enter element 1 x 0:1
Enter element 1 x 1:1
Enter element 1 x 2:1
Enter element 2 x 0:1
Enter element 2 x 1:1
Enter element 2 x 2:1
Addition of Array 1 and Array 2 is:
2       2       2
2       2       2
2       2       2

### 2 Responses

1. Anonymous says:

is it mandatory to initialize the arr3 or we can get the results without it

2. Anonymous says:

same question as above