Program in c to convert decimal no. into corresponding binary number

Program in c to convert decimal no. into corresponding binary number

#include<stdio.h>

#include<conio.h>

void main()

 {

  int dec,d,c=1;

  long int bn=0;

  clrscr();

  printf("Enter decimal number:");

  scanf("%d",&dec);

  while(dec!=0)

   {

    d=dec%2;

    dec=dec/2;

    bn=bn+c*d;

    c=c*10;

   }

  printf("Binary no. of given decimal no. is:");

   printf("%ld",bn);

  getch();

 }

output:

enter decimal number: 7

Binary no. of given decimal no. is:111