CODEWITHSUNDEEP
c++
CodingHero
CodingHero

Reputation: 3015

How to define a run-time exception in c++?

What's the correct way to define a user-defined run-time exception in c++?

I want to define a simple exception and be able to store a string message value in it?

I can't find any examples on this.

Upvotes: 2

Views: 1285

Answers (2)

Tony The Lion
Tony The Lion

Reputation: 63190

class my_exception : public std::exception
{
public:
 my_exception(const std::string& msg) : msg_(msg) {}
 const char* what(); // override what to return msg_;
private:
    std::string msg_;
};

//some other code..

throw my_exception("Error");

This is how you'd create a new run-time exception. It's just a class

Upvotes: 1

Bo Persson
Bo Persson

Reputation: 92211

You can find some predefined exception types in the header <stdexcept>.

Either use one of those or derive your class from it. It has all the machinery already implemented.

Upvotes: 4

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