PAT考试乙级1001(C语言实现)

#include<stdio.h>int main(){    int num;    int count=0;    scanf("%d",&num);    while(num!=1){        if(num%2==0){            num = num/2;            count++;        }else{            num=(3*num+1)/2;            count++;        }    }    printf("%d",count);        return 0;}/*C++:仅有输入输出改变#include <iostream>//头文件using namespace std;//使用名字控件int main(){    int num;    int count=0;    cin>>num;    while(num!=1){        if(num%2==0){            num = num/2;            count++;        }else{            num=(3*num+1)/2;            count++;        }    }    cout<<count;    return 0;}*/

总结：用C编译器的时候注意变量声明一定要在上面。