What is the use of main function in c language

- What is the main function in c language
- What is the use of function in c language
- What is the purpose of main function in c language
- What is the use of getch function in c language
- What is the use of free function in c language
- What is the use of printf function in c language
- What is the use of scanf function in c language
- What is the use of getch and getchar function in c language
- What is main function in c programming language