pta 7-2 奇偶归一猜想

#include<stdio.h>
#include <ctype.h>
int main()
{
    int num=0;
    scanf("%d",&num);
    
    while(num != 1){
        if(num%2 == 0)
            num/=2;
        else
            num = 3*num+1;
      if(num !=1)
        printf("%d ",num);
else 
printf("%d",num);
    }
    
    return 0;
}