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C++ Quiz #159

A what() Built From a Code and a Message

hardExceptions

HttpError stores a code and builds its full text in the constructor. What is printed?

📄 Code

1#include <iostream>
2#include <exception>
3#include <string>
4 
5class HttpError : public std::exception {
6    int m_code;
7    std::string m_full;
8public:
9    HttpError(int code, const std::string& reason)
10        : m_code(code), m_full("E" + std::to_string(code) + ": " + reason) {}
11    int code() const { return m_code; }
12    const char* what() const noexcept override { return m_full.c_str(); }
13};
14 
15int main() {
16    try {
17        throw HttpError(404, "page missing");
18    } catch (const HttpError& e) {
19        std::cout << e.what() << "\n";
20        std::cout << "code " << e.code() << "\n";
21    }
22    return 0;
23}