Throwing Exceptions

In C++, exceptions are a way to handle errors that occur during the execution of a program. Exceptions provide a mechanism for the program to transfer control to a specific block of code when an error occurs.

When you encounter a situation in your code where an error occurs or an unexpected condition arises, you can throw an exception using the throw keyword. Throwing an exception allows you to pass control to an appropriate handler elsewhere in your code.

Here's an example of throwing an exception in C++:

1#include <iostream>
2
3using namespace std;
4
5int divide(int a, int b) {
6    if (b == 0) {
7        throw exception();
8    }
9    return a / b;
10}
11
12int main() {
13    try {
14        int result = divide(10, 0);
15        cout << "Result: " << result << endl;
16    }
17    catch (exception& e) {
18        cout << "Exception Caught!" << endl;
19    }
20    return 0;
21}

In this example, the divide function throws an exception when the second parameter, b, is equal to 0. The exception is caught in the catch block and an error message is displayed.

Throwing exceptions allows you to handle error conditions gracefully and provides a way to communicate error information between different parts of your code.

When choosing which exceptions to throw, consider the specific error scenario and the appropriate action to take when the exception is caught. You can also create custom exception classes to represent different types of errors and handle them accordingly.

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#include <iostream>

using namespace std;

​

int main() {

  // replace with your c++ logic here

}