Program 126:Multiplication of 2 matrices

Program 126:
 

#include<stdio.h>
main()
{ 
 int i,j,k,rows_1,col_1,rows_2,col_2,sum=0;
 printf("Enter number of rows and columns of matrix 1\n");
 scanf("%d %d",&rows_1,&col_1);
 printf("Enter number of rows and columns of matrix 2\n");
 scanf("%d %d",&rows_2,&col_2);
 
 int a1[rows_1][col_1],a2[rows_2][col_2],mul[rows_1][col_2];
 if(col_1==rows_2)
 {
  //Taking input for 1st matrix
 printf("Enter Matrix 1\n");
 for(i=0;i<rows_1;i++)
 {
  for(j=0;j<col_1;j++)
  {
   scanf("%d",&a1[i][j]);
  }
 }
  //Taking input for 2nd matrix
  printf("Enter Matrix 2\n");
 for(i=0;i<rows_2;i++)
 {
  for(j=0;j<col_2;j++)
  {
   scanf("%d",&a2[i][j]);
  }
 }
 //multiplication of matrix
 for(i=0;i<rows_1;i++)
 {
  for(j=0;j<col_2;j++)
  {
   for(k=0;k<rows_2;k++)
   {
    sum+=a1[i][k]*a2[k][j];
   }
   mul[i][j]=sum;
   sum=0;
  }
 }
 
 printf("Multiplication of above matrices is\n");
 
  for(i=0;i<rows_1;i++)
 {
  for(j=0;j<col_2;j++)
  {
   printf("%d\t",mul[i][j]);
  }
  
  printf("\n");
 }
 }
 else
 {
  printf("Not possible with the given rows and columns\n");
 }
 
}

Explanation:

//Coming Soon...

 Output: