CREATE DOS COMMAND DIR BY C

Answer:

Step 1: Write following code.

#include <stdio.h>

#include <dos.h>

void main(int count,char *argv[])

{

  struct find_t q ;

  int a;

  if(count==1)

  argv[1]="*.*";

  a = _dos_findfirst(argv[1],1,&q);

  if(a==0)

  {

     while (!a)

   {

    printf("  %s\n", q.name);

    a = _dos_findnext(&q);

    }

  }

  else

  {

  printf("File not found");

  }

}

Step 2: Save the as open.c (You can give any name)

Step 3: Compile and execute the file.

Step 4: Write click on My computer of Window XP operating system and select properties.

Step 5: Select Advanced -> Environment Variables

Step 6: You will find following window:

Click on new button (Button inside the red box)

Step 7: Write following:

Variable name: path

Variable value: c:\tc\bin\open.c  (the path where you have saved)

Step 8: Open command prompt and write list and press enter button.