Mega Code Archive
Checking for a divide-by-zero exception
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#include <iostream>
using std::cout;
using std::cin;
using std::endl;
class DivideByZeroException {
public:
DivideByZeroException()
: message( "attempted to divide by zero" ) { }
const char *what() const { return message; }
private:
const char *message;
};
double quotient( int numerator, int denominator )
{
if ( denominator == 0 )
throw DivideByZeroException();
return static_cast< double > ( numerator ) / denominator;
}
int main()
{
int number1, number2;
double result;
cout << "Enter two integers (end-of-file to end): ";
while ( cin >> number1 >> number2 ) {
try {
result = quotient( number1, number2 );
cout << "The quotient is: " << result << endl;
}
catch ( DivideByZeroException ex ) {
cout << "Exception occurred: " << ex.what() << '\n';
}
cout << "\nEnter two integers (end-of-file to end): ";
}
cout << endl;
return 0;
}
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