Question

How to handle divide by zero exception using runtime_error in class with C++

Answer 1

#include <iostream>
#include <stdexcept>

using std::cout;
using std::endl;
using std::runtime_error; 

class DivideByZero : public runtime_error {
public:
	DivideByZero::DivideByZero() : runtime_error("divide by zero") {}
};
  
double divide(int x, int y) {
	if (y == 0)
		throw DivideByZero(); 
	
	return static_cast< double >(x) / y;
} 

 int main()
 {
	int n = 13; 
	double result; 
	
	int i = 0;
	while (i++ < 2)
	{
		try {
			   result = divide(n, i - 1);
			   cout << result << endl;
		} 
		catch (DivideByZero &DivideByZero)
		{
			cout <<  DivideByZero.what() << endl;
		} 
		
	} 
	cout << endl;
	
	return 0; 
} 


/*
run:

divide by zero
13

*/

 

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