Addition 3X3 Matrix using function

/*program of addition of two given 3X3 matrix through function*/

#include<stdio.h>

#include<conio.h>

void show_matrix(int mat[3][3]);

void add_matrix(int matA[3][3], int matB[3][3], int matSum[3][3]);

int main()

{

 int x[3][3] = { {1,2,3}, {4,5,6}, {7,8,9} };

 int y[3][3] = { {1,4,7}, {2,5,8}, {4,1,2} };

 int z[3][3];

 add_matrix(x,y,z);

 printf("\nFirst matrix is :\n");

 show_matrix(x);

 printf("\nSecond matrix is :\n");

 show_matrix(y);

 printf("\nNew addition matrix is :\n");

 show_matrix(z);
 getch();

 return 0;

}

void add_matrix(int matA[3][3], int matB[3][3], int matSum[3][3])

{

  int r,c;

  for(r=0; r<3; r++)

  {

    for(c=0; c<3; c++)

        matSum[r][c]=matA[r][c]+matB[r][c];

  }

}

void show_matrix(int mat[3][3])

{

  int r,c;

  for(r=0; r<3; r++)

  {

    for(c=0; c<3; c++)

        printf(" %d",mat[r][c]);

    printf("\n");

  }

}

             Output of above program : 

First matrix is :

1 2 3

4 5 6

7 8 9

Second matrix is :

1 4 7

2 5 8

4 1 2

New addition matrix is :

2  6  10

6  10 14

11 9  11

Related program:

1. Difference of two matrix
2. Sum of matrix
3. Transpose of matrix
4. Product of matrix
5. Diagonal sum of matrix

Addition of two 3x3 matrix

Q. Write a C program for addition of two 3x3 matrix.

Ans.

#include<stdio.h>

#include<conio.h>

int main()

{

 int mata[3][3],matb[3][3],matc[3][3];

 int r,c,k;

 for(r=0; r<3; r++)

 {

  for(c=0; c<3; c++)

  {

    printf("Enter first matrix : ");

    scanf("%d",&mata[r][c]);

  }

 }

 for(r=0; r<3; r++)

 {

  for(c=0; c<3; c++)

  {

    printf("Enter second matrix : ");

    scanf("%d",&matb[r][c]);

  } 

 }

 for(r=0; r<3; r++)
 {
  for(c=0; c<3; c++)
  {
    matc[r][c]=0;
    for(k=0; k<3;k++)
       matc[r][c]=mata[r][c] + matb[r][c];
  }
 }
 printf("New addition matrix : \n"); 
 for(r=0; r<3; r++)
 {
  for(c=0; c<3; c++)
     printf(" %d",matc[r][c]);
  printf("\n");
 }
 getch();

 return 0;

}

Output of above program :

Enter first matrix :
  1 2 3

  4 5 6

  7 8 9

Enter second matrix :
  2 1 7

  4 6 3

  8 1 1

New addition matrix :
  3  3  10

  8  11 7

  15 9  10