Coding⏱️ 1 min read📅 2026-05-30
How to Fix: How to throw a C++ exception
Learn how to throw a C++ exception with a custom message.
Quick Answer: Use the `throw` keyword followed by an exception object, e.g., `throw std::invalid_argument(
📋 Table of Contents
To throw a C++ exception, you need to use the throw keyword followed by an object of the exception type. You can also use the std::exception class as the base class for your custom exceptions.
💡 How to Customize Throw, Try, Catch Statements
- [Cause]
🚀 Customizing the Exception Message
Method 1: Using a Custom Exception Class
- Step 1: Define a custom exception class that inherits from
std::exception.
class NegativeValueException : public std::exception { private: int value; public: NegativeValueException(int val) : value(val) {} const char* what() const throw() { return ❓ Frequently Asked Questions
Step 1: Define a custom exception class that inherits from std::exception.
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