#include <stdio.h>
#include <stdlib.h>

// gcc command_line_input.c -o command_line
// command_line first second third
// ./command_line first second third

int main( int argc, char ** argv ) {

  printf( "argc: %d\n", argc );
  printf( "0: %s\n", argv[0] );
  printf( "1: %s\n", argv[1] );
  printf( "2: %s\n", argv[2] );

}