Decimal to Binary Conversion

// program to convert decimal to binary
#include<stdio.h>
#include<conio.h>
int main()
{
int a[25];
int b;
int i;
int d=0;
printf("enter the number");
scanf("%d",&b);
for(i=0;i<25;i++)
{
a[i]=b%2;
d=b/2;
b=d;
}
for(int j=25;j>=0;j--)
{
printf("%d",a[j]);
}
getch();
return 0;
}