Does a C language program always start execution from the main function?

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

The operating environment of this tutorial: windows7 system, c99 version, Dell G3 computer.

The execution of a C program always starts from the main function and ends at the main function.

The main function, also known as the main function, is the starting point of program execution. Main is relative, just like the main tone of phonetic theory is overtones, and overtones are the parts in the program other than main. Other functions are generated to cater to people's way of thinking rather than inevitable patterns. 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 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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