61 lines
2.4 KiB
C++
61 lines
2.4 KiB
C++
|
// fig12_02.cpp
|
||
|
|
// Example that throws an exception on
|
||
|
|
// an attempt to divide by zero.
|
||
|
|
#include <fmt/format.h>
|
||
|
|
#include <iostream>
|
||
|
|
#include "DivideByZeroException.h" // DivideByZeroException class
|
||
|
|
|
||
|
|
// performs division only if the denominator is not zero;
|
||
|
|
// otherwise, throws DivideByZeroException object
|
||
|
|
double quotient(double numerator, double denominator) {
|
||
|
|
// throw DivideByZeroException if trying to divide by zero
|
||
|
|
if (denominator == 0.0) {
|
||
|
|
throw DivideByZeroException{};
|
||
|
|
}
|
||
|
|
|
||
|
|
// return division result
|
||
|
|
return numerator / denominator;
|
||
|
|
}
|
||
|
|
|
||
|
|
int main() {
|
||
|
|
int number1{0}; // user-specified numerator
|
||
|
|
int number2{0}; // user-specified denominator
|
||
|
|
|
||
|
|
std::cout << "Enter two integers (end-of-file to end): ";
|
||
|
|
|
||
|
|
// enable user to enter two integers to divide
|
||
|
|
while (std::cin >> number1 >> number2) {
|
||
|
|
// try block contains code that might throw exception
|
||
|
|
// and code that will not execute if an exception occurs
|
||
|
|
try {
|
||
|
|
double result{quotient(number1, number2)};
|
||
|
|
std::cout << fmt::format("The quotient is: {}\n", result);
|
||
|
|
}
|
||
|
|
catch (const DivideByZeroException& divideByZeroException) {
|
||
|
|
std::cout << fmt::format("Exception occurred: {}\n",
|
||
|
|
divideByZeroException.what());
|
||
|
|
}
|
||
|
|
|
||
|
|
std::cout << "\nEnter two integers (end-of-file to end): ";
|
||
|
|
}
|
||
|
|
|
||
|
|
std::cout << '\n';
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/**************************************************************************
|
||
|
|
* (C) Copyright 1992-2022 by Deitel & Associates, Inc. and *
|
||
|
|
* Pearson Education, Inc. All Rights Reserved. *
|
||
|
|
* *
|
||
|
|
* DISCLAIMER: The authors and publisher of this book have used their *
|
||
|
|
* best efforts in preparing the book. These efforts include the *
|
||
|
|
* development, research, and testing of the theories and programs *
|
||
|
|
* to determine their effectiveness. The authors and publisher make *
|
||
|
|
* no warranty of any kind, expressed or implied, with regard to these *
|
||
|
|
* programs or to the documentation contained in these books. The authors *
|
||
|
|
* and publisher shall not be liable in any event for incidental or *
|
||
|
|
* consequential damages in connection with, or arising out of, the *
|
||
|
|
* furnishing, performance, or use of these programs. *
|
||
|
|
**************************************************************************/
|