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#include<bits/stdc++.h>
using namespace std;
 
class square
{
  public:void area(int r);
  };
void square::area(int r)
{  cout<<"Area="<<(r*r);
}
 
 
 
int main()
{
    square sc;
    int length;
    cin>>length;
    sc.area(length);
 
}
 

Main.java:1: error: illegal character: '#'
#include<bits/stdc++.h>
^
Main.java:1: error: class, interface, or enum expected
#include<bits/stdc++.h>
        ^
Main.java:6: error: illegal start of type
  public:void area(int r);
        ^
Main.java:6: error: ';' expected
  public:void area(int r);
         ^
Main.java:6: error: invalid method declaration; return type required
  public:void area(int r);
              ^
Main.java:8: error: class, interface, or enum expected
void square::area(int r)
^
Main.java:10: error: class, interface, or enum expected
}
^
Main.java:17: error: class, interface, or enum expected
    int length;
    ^
Main.java:18: error: class, interface, or enum expected
    cin>>length;
    ^
Main.java:19: error: class, interface, or enum expected
    sc.area(length);
    ^
Main.java:21: error: class, interface, or enum expected
}
^
11 errors

Standard output is empty