WAP for multiplication of matrix

#include<iostream.h>

#include<conio.h>

void main()

{

 int a[2][2],b[2][2],c[2][2],n,m,i,j,k;

 cout<<"\n enter size of rows :";

 cin>>n;

 cout<<"\n enter size of collumns  :";

 cin>>m;

 cout<<"\n enter element of 2d array :";

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

cin>>a[i][j];

}

}

 cout<<"\n first matrix \n\n\n:";

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

cout<<"\t"<<a[i][j];

}

cout<<"\n\n";

}

 cout<<"\n enter same size of rows :";

 cin>>n;

 cout<<"\n enter same size of collumns  :";

 cin>>m;

 cout<<"\n enter element of 2d array :";

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

cin>>b[i][j];

}

}

 cout<<"\n second matrix \n\n\n:";

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

cout<<"\t"<<b[i][j];

}

cout<<"\n\n";

}

for(i=1;i<=n;i++)

{

 for(j=1;j<=m;j++)

 {

  c[i][j]=0;

  for(k=1;k<=n;k++)

  {

  c[i][j]=c[i][j]+a[i][k]*b[k][j];

  }

 }

}

 cout<<"\n multiplication of matrix is \n\n\n:";

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

cout<<"\t"<<c[i][j];

}

cout<<"\n\n";

}

 getch();

 clrscr();

 }