48 lines
1.9 KiB
C++
48 lines
1.9 KiB
C++
// fig12_04.cpp
|
|
// Demonstrating stack unwinding.
|
|
#include <iostream>
|
|
#include <stdexcept>
|
|
|
|
// function3 throws runtime error
|
|
void function3() {
|
|
std::cout << "In function 3\n";
|
|
|
|
// no try block, stack unwinding occurs, return control to function2
|
|
throw std::runtime_error{"runtime_error in function3"};
|
|
}
|
|
|
|
// function2 invokes function3
|
|
void function2() {
|
|
std::cout << "function3 is called inside function2\n";
|
|
function3(); // stack unwinding occurs, return control to function1
|
|
}
|
|
|
|
// function1 invokes function2
|
|
void function1() {
|
|
std::cout << "function2 is called inside function1\n";
|
|
function2(); // stack unwinding occurs, return control to main
|
|
}
|
|
|
|
// demonstrate stack unwinding
|
|
int main() {
|
|
// invoke function1
|
|
std::cout << "function1 is called inside main\n";
|
|
function1(); // call function1 which leads to a runtime_error
|
|
}
|
|
|
|
|
|
/**************************************************************************
|
|
* (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. *
|
|
**************************************************************************/
|