Learn and Master C Programming - #error' preprocessor directive

The video tutorial explains the hash error directive, which emits a user-specified error message during compilation and halts the process. It is useful for ensuring code is only compiled on specific platforms, such as Windows. The preprocessor checks for platform definitions and executes the hash error if conditions are not met, stopping compilation immediately.

What is the primary function of the hash error directive?

• To emit a user-specified error message and stop compilation

• To optimize code execution

• To improve runtime performance

• To enhance code readability

In what scenario would you use the hash error directive?

• When you want to compile code on all platforms

• When you want to prevent code compilation on specific platforms

• When you want to enhance code security

• When you want to debug runtime errors

How does the hash error directive help in platform-specific code compilation?

• By optimizing code for different platforms

• By enhancing the speed of compilation

• By stopping compilation if the code is not meant for a specific platform

• By allowing code to run on all platforms

What does the preprocessor do when it encounters a hash error directive?

• It continues compilation without any changes

• It skips the directive and proceeds

• It shows the error message and stops compilation

• It optimizes the code for better performance

What happens immediately after the hash error directive is executed?

• The code is compiled for all platforms

• The compilation process stops

• The compilation process continues

• The code is optimized for better performance