#include <iostream>
#include <fstream>

using namespace std;

int ErrorCode = 0 ;
int divideOperation1( int x1, int y1 )
 {
	 ErrorCode = 0 ;
	 if ( y1 == 0 )
	   {
		   ErrorCode = -1 ;
		   return 0 ;
		}
	return ( x1 / y1 ) ;
 }

int divideOperation2( int x1, int y1 )
{
	ErrorCode = 0 ;
	if ( y1 == 0 )
	  {
		  throw "Divide by zero." ;
	  }
	 return ( x1 / y1 ) ;
}

int main()
{
	divideOperation1 ( 4 ,  0 ) ;
	if ( ErrorCode == -1 )
	  cout << "Error divisor is zero." << endl ;

	    try
	     {
			  divideOperation2 ( 4 ,  0 ) ;
		 }
		catch ( const char* str1 )
		{
			cout << str1  << endl ;
		}
	return 0;
}