PAT basic 1001

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

pat的第一题