C++

8.15    The “try-catch” Block and “throw”

Exceptions are an important but advanced topic. Because the try with the corresponding catch is the only remaining statement, I will still give you a preview. I will go into detail in Chapter 10.

With a try block, you enclose program code where you expect certain errors that you want to handle. You handle these errors in the subsequent catch.

// https://godbolt.org/z/jhPaEjh1r#include <iostream>int main() {    try {                                        // beginning of the try block        for(int n=1; ; n=n*2) {            if (n > std::numeric_limits<int>::max()/2) { // check for coming overflow                throw "There would be an overflow";            }        }    }                                            // End of the try block    catch(const char *error) {                   // if this error occurs, …        std::cout << "Error: " << error << " ";  // … ...