C Program for matrix multiplication

#include
#include
main()
{
 int m1[20][20],i,j,k,m2[20][20],mult[20][20],r1,r2,c1,c2;
 clrscr();
 printf(“Enter the order of the first matrix in the format of row,colum\n”);
 scanf(“%d%d”,&r1,&c1);
  printf(“ENTER THE ELEMENTS OF THE FIRST MATRIX in row wise\n”);
  for(i=0;i<r1;i++)
   {
    for(j=0;j<c1;j++)
     {
      scanf(“%d”,&m1[i][j]);
    }
   }
printf(“Enter the order of the second matrix in the format of row,colum\n”);
 scanf(“%d%d”,&r2,&c2);
 printf(“ENTER THE ELEMENTS OF THE SECOND MATRIX in row wise\n”);
  for(i=0;i<r2;i++)
   {
   for(j=0;j<c2;j++)
    {
     scanf(“%d”,&m2[i][j]);
    }
   }
   if(r2==c1)
    {
     for(i=0;i<r1;i++)  // Multiplication Of Matrix
      {
       for(j=0;j<c1;j++)
 {
  mult[i][j]=0;
  for(k=0;k<r1;k++)
   {
    mult[i][j]+=m1[i][k]*m2[k][j];
   }
 }
      }
 printf(“FIRST MATRIX\n”);
  for(i=0;i<r1;i++)
  {
 for(j=0;j<c1;j++)
 {
  printf(“%d\t”,m1[i][j]);
 }
  printf(“\n”);
 }
  printf(“SECOND MATRIX\n”);
  for(i=0;i<r2;i++)
  {
 for(j=0;j<c2;j++)
 {
  printf(“%d\t”,m2[i][j]);
  }
  printf(“\n”);
 }
  printf(“PRODUCT OF MATRIX\n”);
 for(i=0;i<r2;i++)
 {
  for(j=0;j<c2;j++)
  {
 printf(“%d\t”,mult[i][j]);
 }
 printf(“\n”);
  }
  }       // ……….if END
  else
 {
  printf(“MATRIX MULTIPLICATION IS NOT POSSOBLE\n”);
 }
  getch();
  return(0);
  }

Output

#C