C Programming - convert decimal numbers into its octal

#include<stdio.h>
#include<conio.h>
main()
{
int p=1,num=0,oct=0,d;
clrscr();
printf("\n enter the decimal number=");
scanf("\n %d",&num);
while(num)
{
d=num%8;
oct=oct+p*d;
p=p*10;
num=num/8;
}
printf("\n octal number %d",oct);
getch();
}

output:-enter the decimal number=8
octal number=10