C++ Programming-Matrix multiplication

#include<iostream.h>

#include<conio.h>

class met

      {

            int a[10][10],b[10][10],c[10][10],c1,c2,r1,r2,i,j,k;

      public:

            void read()

            {

            cout<<"enter the order of the first matrix :";

            cin>>r1>>c1;

            cout<<"enter the order of the second matrix :";

            cin>>r2>>c2;

            if(c1!=r2)

            cout<<"multiplication is not possible";

            else

            {

            cout<<"enter the elements in the first matrix :";

            for(i=0;i<r1;i++)

            {

            for(j=0;j<c1;j++)

            cin>>a[i][j];

            }

            cout<<"enter the elements in second matrix :";

            for(i=0;i<r2;i++)

            {

            for(j=0;j<c2;j++)

            cin>>b[i][j];

            }

            }

            }

            public:void mul()

            {

            cout<<"matrix after multiplication :\n";

            for(i=0;i<r1;i++)

            {

            cout<<"\n";

            for(j=0;j<c2;j++)

            {

            c[i][j]=0;

            for(k=0;k<c1;k++)

            {

            c[i][j]=c[i][j]+a[i][k]*b[k][j];

            }

            cout<<c[i][j]<<"\t";

            }

            }

            }

      };

            void main()

            {

            clrscr();

            met ob;

            ob.read();

            ob.mul();

            getch();

            }

OUTPUT

enter the order of the first matrix :2 2

enter the order of the second matrix :2 2

enter the elements in the first matrix :

1

2

3

4

enter the elements in second matrix :

1

2

3

4

matrix after multiplication :

7       10

15      22