问一道c语言题目，问如何把十进制转化为2进制，8进制，16进制

#include void main() { int n,right_digit,sum=0,count=0; scanf("%d",&n); do { right_digit=n%2; sum=sum*2+right_digit; n=n/2; count++; } while(n!=0); printf("%d",sum); printf("\n"); do { right_digit=sum