C Init Function Explained: Purpose & Use

In C language, the purpose of the init function is to carry out initialization operations. It is typically used to initialize global variables, data structures, files, devices, etc. The init function is called at the beginning of the program to complete necessary initialization tasks and ensure that the program is in the correct state during runtime.

The init function is typically placed in the program’s main file, such as the one containing the main function. It is automatically called when the program starts and does not need to be manually invoked. The init function is used to initialize global variables, open files, devices, or other resources, and perform necessary setup and preparatory work.

It should be noted that the init function is only called once during the program’s execution, usually at the beginning. If the program needs to perform multiple initialization operations, these can be encapsulated into separate functions and called in sequence within the init function.

In conclusion, the purpose of the init function is to carry out one-time initialization operations when the program starts, ensuring that the program is in the correct state during runtime, ready to receive user input and perform the corresponding functions.