Language Ccpp Cref Examples Command_line.c

/ ********************************************************************
 *
 * Purpose: Demonstrate getting parameters from the command line.
 * Author: M J Leslie
 * Date: 27-Mar-94
 *
 ********************************************************************/
#include <stdio.h>
main(int argc, char *argv[])
{
 int count;
 /* Main takes two variables 'argc' is the number of parms on the 
 * command line and 'argv' is a pointer to each of the parameters.
 *
 *	int argc -- integer number called 'argc'
 *	char *argv[] -- Character pointer array!
 */
 printf("%i parameters entered on the command line.\n", argc);
				/*
				 * progname		argc = 1
				 * progname parm1 parm2	argc = 3
				 */
				/* 
				 * We take 1 from argc because 
				 * the argv array starts at zero 
				 * an ends at argc -1
				 */
 for ( count = 0; count <= argc -1 ; count++)
 {
				/* printf expects a pointer 
				 * to the text 
				 */
 printf("parm %d is %s\n", count, argv[count]);
 }
}

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