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#In the C language, execution does not start from the first defined function. C language programs always start execution from the main() function.
A program, whether complex or simple, is generally a "function"; this function is called the "main() function", which is also 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 the phonetic theory is the overtone, and the overtone is the program except main Other functions are generated to cater to people's way of thinking rather than inevitable patterns.
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 will end the entire program. When the program is executed, the main function is called by the system.
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