how do i? re: argc - argv

hello all,

im trying to debug a program using Labwindows/CVI (V5.5) IDE running in a dosbox (windows xp).

However as the program requires command line parameters i cant see a way to debug the program because CVI doesnt brake on breakpoints when running standalone executable, and when running the program in debug mode one cant fill the argv members, so i thought what about hardcoding the char arrays in global space then passing the arrays to the argv members, but after trying a few different ways i cant get past the compiler.

can it be done? im not an expert, been programming for a few months now.

i have been reading around this sight and have learned what argc - argv mean but dont know enough about 'c' to work out a way to do this.

my program (well most of it belongs to Ray Gardner - Public Domain) is here:

Code:

---

//#include <ansi_c.h>
#include "scaldate.h"

#if ISO_CAL                        /* MONDAY == 0 */
        #define ADJ 5
#else                                /* SUNDAY == 0 */
        #define ADJ 6
#endif

unsigned DOW(unsigned y, unsigned m, unsigned d)
{
        if (m < 3)
        {
                m += 13;
                y--;
        }
        else m++;
        return (d + 26 * m / 10 + y + y / 4 - y / 100 + y / 400 + ADJ) % 7;
}



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


/* argc is the number of command line parameters including the name of the
  program , argv[] is an array of pointers to the command line parameters */
int main(int argc, char *argv[])
{

       
       
        int ch;
        int Day;
        void usage(void);
        unsigned d, m, y, days[] = {31, 29, 31, 30, 31, 30,
                                                                31, 31, 30, 31, 30, 31};
       
        char *day[2][7] = {{ "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"},
                                          { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"}};
                                               
        char *month[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
                                        "Jul", "Aug", "Sep", "Oct", "Nov", "Dec",};
       
                                       
        if (4 > argc)
                usage();
        y = atoi(argv[1]);
        m = atoi(argv[2]);
        d = atoi(argv[3]);
        if (!m || m > 12)
                usage();
        if (!d || d > days[m - 1])
                usage();
        if (y < 100)
                y += 1900;
        Day = DOW(y, m, d);
        printf("DOW(ISO_CAL=%d) returned %d, so %d %s %d is a %s\n",
                ISO_CAL, Day, d, month[m - 1], y, day[ADJ - 5][Day]);
       
        printf ("Press [Enter] to continue");
  while ((ch = getchar()) != '\n' && ch != EOF);
  return(0);
       
               

}



void usage(void)
{
        int ch;
        puts("Usage: DOW yy[yy] mm dd");
   
    printf ("Press [Enter] to continue");
    while ((ch = getchar()) != '\n' && ch != EOF);
       
        exit(-1);
}

---

luigi

Well in VC++, you do this
Project->Settings
Select the debug tab
fill in the dialog titled "program arguments"

Might I suggest you ask on the support forum for your IDE if you have an IDE issue.
Whilst we can easily help you with the 'C' issues, numbers thin rapidly when you start accounting for any number of IDE's

If worse comes to worst, you can always use

Code:

---

int
main(void)

---

And then declare argc and argv within main for your testing:

Code:

---

int
main(void)
{
  ...
  int  argc = 4;
  char *argv[] = {
    "prog",
    "2004",
    "6",
    "11",
  };

  ...
}

---