C programs always use the main function as the starting line of program execution, right?

#C programs always use the main function as the starting line of program execution, yes.

(Recommended tutorial: C Language Tutorial)

A C program always starts execution from the main function, regardless of its position in the program Location. In the main function, you can call other functions in the program, but other functions cannot call the main function. The program finally ends from the main function.

Introduction to the main function:

The main function, also known as the main function, is the starting point for program execution. Main is relative, as is the main theme of phonetic theory. In terms of overtones, overtones are other functions in the program except main, which are generated to cater to people's way of thinking rather than a certain pattern. There are primary and secondary functions, and the execution is clear and logical, which not only modularizes the program but also creates a closed whole.

Program execution always starts from the main function. If there are other functions, it will return to the main function after completing the calls to other functions. Finally, the main function ends the entire program. When the program is executed, the main function is called by the system.

The main function is called after the initialization of non-local objects with static storage duration is completed during program startup. It is the designated entry point for a program in a hosted environment (that is, an operating system). Entry points for stand-alone programs (boot loaders, operating system kernels, etc.) are implementation-defined.

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