What are Macros?

What are Macros?

In C++, a macro is part of code that is expanded to its value. Macros are defined using the #define directive. They provide a way to create symbolic constants and code snippets that can be reused throughout a program. Macros are processed by the C++ preprocessor, which runs before the actual compilation. During preprocessing, macros are replaced with their corresponding values, making it an effective tool for code generation and simplification....

Syntax

The syntax for defining a macro in C++ is as follows:...

Example of Macro

Let’s explore a simple example of a macro in C++. Suppose we want to create a macro to calculate the square of a number. Here’s how we can define and use a macro:...

Types of Macros in C++

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Predefined Macros

Macros can be classified into four types in C++:...

Advantages of Macros

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Disadvantages of Macros

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Conclusion

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