Subtract two matrices - Program and concept

The concept and the program to subtract one matrix from another is similar to the addition of two matrices expect for the replacement of sign '+' with '-'.
Subtraction of matrices is only possible if the two matrices are ALIKE in nature i.e. have same number of rows and columns.

Running program code:

#include<iostream.h>
#include<process.h>
#include<iomanip.h>
#include<conio.h>
const int max=10;

void main()
{
 clrscr();
 char ch;
 int A[max][max],B[max][max],C[max][max],m,n,i,j;
 cout<<"\n\n\t\tTHIS WILL Subtract two matrices\t\t\n"<<endl;
 cout<<"\n\nFor subtracting two matrices, both should be ALIKE...";
 cout<<" and of equal dimension\n"<<endl;
 cout<<"\nEnter column of the matrix : ";
 cin>>m;
 cout<<"\nEnter row of the matrix : ";
 cin>>n;
 cout<<endl;
 cout<<"\n\nEnter the FIRST matix (row wise) : "<<endl;
 for(i=0; i<m; ++i)
 {
  for(j=0; j<n; ++j)
  {
   cout<<"\nElement at position ["<<i<<"]["<<j<<"] :  ";
   cin>>A[i][j];
  }
 }
 cout<<"\n\nThe FIRST matrix is : \n\n";
 for(i=0; i<m; ++i)
 {
  cout<<"\n\t\t";
  for(j=0; j<n; ++j)
  {
   cout<<setw(5)<<A[i][j];
  }
  cout<<"\n\n";
 }
 cout<<endl;
 cout<<"\n\nEnter the SECOND matix (row wise) : "<<endl;
 for(i=0; i<m; ++i)
 {
  for(j=0; j<n; ++j)
  {
   cout<<"\nElement at position ["<<i<<"]["<<j<<"] :  ";
   cin>>B[i][j];
  }
 }
 cout<<"\n\nThe SECOND matrix is : \n\n";
 for(i=0; i<m; ++i)
 {
  cout<<"\n\t\t";
  for(j=0; j<n; ++j)
  {
   cout<<setw(5)<<B[i][j];
  }
  cout<<"\n\n";
 }
 cout<<endl;
 for(i=0; i<m; ++i)
  for(j=0; j<n; ++j)
   C[i][j]=A[i][j]-B[i][j];
 cout<<"\n\nThe resultant matrix is : \n";
 for(i=0; i<m; ++i)
 {
  cout<<"\n\t\t";
  for(j=0; j<n; ++j)
  {
   cout<<setw(5)<<C[i][j];
  }
  cout<<"\n\n";
 }
 getch();
}