GnsP

$ gcc --help

Usage: gcc [options] file...
Options:
  -pass-exit-codes         Exit with highest error code from a phase
  --help                   Display this information
  --target-help            Display target specific command line options
  --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]
                           Display specific types of command line options
  (Use '-v --help' to display command line options of sub-processes)

GnsP

// This is a simple C program to experiment with the GCC Compilation Steps
// It uses the #define directives below only to provide a good visualization
// of the preprocessing step.

// author : Ganesh Prasad (gnsp)

#define ONE 1
#define TWO 2
#define EXIT_OK 0
#define EXIT_FAILURE 1