C++ Program for Matrix

Program 1

// Program for matrix 
#include<iostream>
#define clrscr() system("cls")
using namespace std;
int main()
{
     int a[50][50],r,c,m,n;
     clrscr();
     xyz:cout<<"\nEnter value or row and column\n";
     cin>>m>>n;
     if(m>50 || n>50)
     {
        cout<<"\nInvalid value pls enter again\n";
        goto xyz;
     }
     cout<<"\nEnter matrix of "<<m <<" by " <<n<<" \n";
     for(r=0;r<m;r++)
     {
        for(c=0;c<n;c++)
        cin>>a[r][c];
     }
     cout<<"\nMatrix elements:\n";
     for(r=0;r<m;r++)
     {
        for(c=0;c<n;c++)
        {
            cout<<a[r][c]<<"\t";
        }
      cout<<"\n";  
     }
     
}