What is the use of main function in C language

This article mainly shows you "what is the use of main function in c language". It is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn this article "what is the use of main function in c language?"

1. The main function is the entry function of the C program, that is, the execution of the program starts from the main function, and the transfer of other functions is also called directly or indirectly in the main function.

2. The return value of the main function is used to explain the exit status of the program.

If 0 is returned, the program exits normally. The meaning of returning other numbers is determined by the system. A non-zero return usually indicates an abnormal exit of the program.

Example

# include # include int main (int argc, char * * argv) {int I = 0position printf ("The program name is% s\ n", argv [0]); printf ("The command line has% d argument:\ n", argvc-1); for (I = 1; I < argc; iTunes +) {printf ("% s", argv [I]);} return 0;} above is all the content of the article "what is the use of main functions in c language"? thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!