Is it possible run program without main() function in c language

Answer 1

Yes
main () is just the default entry point of your program, you can always tell your linker to change it to something else.

For gcc it's "-e" option

Answer 2

Tell a simple program of c in which there is no main() function

Answer 3

Sanskar gupta take any C program and remove the main function and you would have a "simple c program with no main () function "

Even a blank file would also do.