Matrix Program #1

8. Read two n x n matrices and perform addition of matrices into third matrix and print it.

#include<stdio.h>
void main()
{
   int i, j, mat1[10][10], mat2[10][10], mat3[10][10];
   int row1, col1, row2, col2;

   printf("Enter the number of Rows of Mat1 : ");
   scanf("%d", &row1);
   printf("Enter the number of Columns of Mat1 : ");
   scanf("%d", &col1);

   printf("Enter the number of Rows of Mat2 : ");
   scanf("%d", &row2);
   printf("Enter the number of Columns of Mat2 : ");
   scanf("%d", &col2);

   /* Before accepting the Elements Check if no of
    rows and columns of both matrices is equal */
   if (row1 != row2 || col1 != col2)
   {
      printf("\nOrder of two matrices is not same\n");
      return ;
   }
  printf("\n");

   //Accept the Elements in Matrix 1
   for (i = 0; i < row1; i++)
   {
      for (j = 0; j < col1; j++)
      {
         printf("Enter the Element a[%d][%d] : ", i, j);
         scanf("%d", &mat1[i][j]);
      }
   }
   printf("\n");

   //Accept the Elements in Matrix 2
   for (i = 0; i < row2; i++)
   {
      for (j = 0; j < col2; j++)
      {
         printf("Enter the Element b[%d][%d] : ", i, j);
         scanf("%d", &mat2[i][j]);
      }
    } 

   //Print out the Matrix 1
   printf("\nThe First Matrix is : \n");
   for (i = 0; i < row1; i++)
   {
      for (j = 0; j < col1; j++)
      {
         printf("%d\t", mat1[i][j]);
      }
      printf("\n");
   }

  //Print out the Matrix 2
   printf("\nThe Second Matrix is : \n");
   for (i = 0; i < row2; i++)
   {
      for (j = 0; j < col2; j++)
      {
         printf("%d\t", mat2[i][j]);
      }
      printf("\n");
   }
  
   //Addition of two matrices
   for (i = 0; i < row1; i++)
   {
      for (j = 0; j < col1; j++)
      {
         mat3[i][j] = mat1[i][j] + mat2[i][j];
      }
   }

   //Print out the Resultant Matrix
   printf("\nThe Addition of two Matrices is : \n");
   for (i = 0; i < row1; i++)
   {
      for (j = 0; j < col1; j++)
      {
         printf("%d\t", mat3[i][j]);
      }
      printf("\n");
   }
}

 Output

• Enter the number of Rows of Mat1 : 3
  Enter the number of Columns of Mat1 : 3
  Enter the number of Rows of Mat2 : 3
  Enter the number of Columns of Mat2 : 3
  
  Enter the Element a[0][0] : 1
  Enter the Element a[0][1] : 2
  Enter the Element a[0][2] : 3
  Enter the Element a[1][0] : 1
  Enter the Element a[1][1] : 2
  Enter the Element a[1][2] : 3
  Enter the Element a[2][0] : 1
  Enter the Element a[2][1] : 2
  Enter the Element a[2][2] : 3
  
  Enter the Element b[0][0] : 1
  Enter the Element b[0][1] : 2
  Enter the Element b[0][2] : 3
  Enter the Element b[1][0] : 1
  Enter the Element b[1][1] : 2
  Enter the Element b[1][2] : 3
  Enter the Element b[2][0] : 1
  Enter the Element b[2][1] : 2
  Enter the Element b[2][2] : 3
  
  The First Matrix is :
  1    2    3  
  1    2    3  
  1    2    3  
  
  The Second Matrix is :
  1    2    3  
  1    2    3  
  1    2    3  
  
  The Addition of two Matrices is :
  2    4    6  
  2    4    6  
  2    4    6   

•  Enter the number of Rows of Mat1 : 2
  Enter the number of Columns of Mat1 : 3
  Enter the number of Rows of Mat2 : 3
  Enter the number of Columns of Mat2 : 2
  
  Order of two matrices is not same

 Note:

1. One Matrix can be added with another only if the order of both matrices is Equal
2. No of rows of MAT-1 = No of rows of MAT-2
3. No of col of MAT-1 = No of col of MAT-2
4. During addition a[0][0] is added with b[0][0] and result is stored in c[0][0]

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