C program to print binary equivalent of an integer

WRITE A C PROGRAM TO PRINT BINARY EQUIVALENT OF AN INTEGER





#include<stdio.h>
#include<conio.h>
void main()
{
 int n,i=0;
 printf("Enter a number:");
 scanf("%d",&n);
 while(n!=0)
 {
  a[i]=n%2;
  n=n/2;
  i++;
 }
 printf("The binary equivalent:");
 i--;
 while(i>=0)
 {
  printf("%d",a[i]);
  i--;
 }
 getch();
}


Output:
   Enter a number:9
   The binary equivalent:1001