21 - WAP to add and multiply two matrices of order nxn.

WAP to add and multiply two matrices of order nxn.

#include<stdio.h>
 
int main() {
   int i, j, mat1[10][10], mat2[10][10], mat3[10][10];
   int row1, col1, row2, col2;
 
   printf("\nEnter the number of Rows of Mat1 : ");
   scanf("%d", &row1);
   printf("\nEnter the number of Cols of Mat1 : ");
   scanf("%d", &col1);
 
   printf("\nEnter the number of Rows of Mat2 : ");
   scanf("%d", &row2);
   printf("\nEnter 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 ");
      exit(0);
   }
 
   //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]);
      }
   }
 
   //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]);
      }
 
   //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");
   }
 
   return (0);
}

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] : 2
Enter the Element a[1][1] : 1
Enter the Element a[1][2] : 1
Enter the Element a[2][0] : 1
Enter the Element a[2][1] : 2
Enter the Element a[2][2] : 1
 
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] : 2
Enter the Element b[1][1] : 1
Enter the Element b[1][2] : 1
Enter the Element b[2][0] : 1
Enter the Element b[2][1] : 2
Enter the Element b[2][2] : 1
 
The Addition of two Matrices is :
2 4 6
4 2 2
2 4 2