Avoiding the main (entry point) in a C program

by

If you’re using gcc, I found a thread that said you can use the -e command-line parameter to specify a different entry point; so you could use func as your entry point, which would leave main unused.

Note that this doesn’t actually let you call another routine instead of main. Instead, it lets you call another routine instead of _start, which is the libc startup routine — it does some setup and then it calls main. So if you do this, you’ll lose some of the initialization code that’s built into your runtime library, which might include things like parsing command-line arguments. Read up on this parameter before using it.

If you’re using another compiler, there may or may not be a parameter for this.

More Related Contents:

  1. how do compilers assign memory addresses to variables?
  2. Which library has power function? [closed]
  3. error: incompatible types for a function that returns float in C
  4. Passing an array as an argument to a function in C
  5. C function syntax, parameter types declared after parameter list
  6. Nested function in C
  7. How do I check OS with a preprocessor directive?
  8. Compilation error: stray ‘\302’ in program, etc
  9. Macro vs Function in C
  10. Passing multidimensional arrays as function arguments in C
  11. Why is the .bss segment required?
  12. How to change entry point of C program with gcc?
  13. X,Y passing size for the array in C function
  14. stdout thread-safe in C on Linux?
  15. Why must the variable used to hold getchar’s return value be declared as int?
  16. strcpy() return value
  17. What is this strange function definition syntax in C? [duplicate]
  18. What does ‘sizeof (function name)’ return?
  19. Returning Arrays/Pointers from a function
  20. What happens with an extern inline function?
  21. How to power down the computer from a freestanding environment?
  22. C compiler for Windows? [closed]
  23. When is an array name or a function name ‘converted’ into a pointer ? (in C)
  24. Manipulate multidimensional array in a function
  25. Is there a C compiler that targets the 8086? [closed]
  26. Why GDB jumps unpredictably between lines and prints variables as “”?
  27. Non-blocking version of system()
  28. Counting words in a string – c programming
  29. What is the function of an asterisk before a function name?
  30. How do I compile the asm generated by GCC?

Leave a Comment