Write a program to convert Octal to Binary

/*Write a program to convert Octal to Binary*/

#include<stdio.h>

#include<conio.h>

void main()

{

 clrscr();

 int a,b;

 printf("Enter 2 digit octal no.");

 scanf("%d",&a);

 int x,y;

 x=a%10;

 y=a/10;

 b=(y*8)+(x);//changing no. to decimal

 int i[5];

 for(int j=0;b!=0;b/=2)

 {



  i[j]=b%2;

  j++;

 }

 for(int r=j-1;r>=0;r--)

 {

  printf("%d",i[r]);
 }
 getch();
}