Write a c program to create dos command directory

Write a c program to create dos command: dir.

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 list.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\list.c (Path where you have saved)

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

Command line argument tutorial.