十进制转二进制

#include <stdio.h>
int main()
{
int i=0,n,a[32];
scanf("%d",&n);
while(n>0)
{
a[i]=n%2;
i=i+1;
n=n/2;
}
for(i--;i>=0;i--)
printf("%d",a[i]);
return 0;
}