抽奖程序

/* Note:Your choice is C IDE */
//引入标准输入、输出库 
#include "stdio.h"
//引入系统时间库 
#include "time.h"
//宏定义，随机数生成函数 
#define Random(x) (rand() % x) 

//函数声明 
void print_name(char *pt,int max_size);
void prize();

void main()
{
    prize();
}

void prize(){
    char students[42][20] = {
        "王旭辉","黄长安","王安","杨嘉辉","卓有权","刘先明",
        "潘奎任","叶采梦","曹继生","周有静","梁铁成","李新伟",
        "陈路","韦桂金","郭由冲","钟富豪","黎明忠","蓝森明",
        "韦小娟","陈冠宏","庄瑞","邹耀销","蒋廷帅","王文森",
        "徐庆生","李诚","岑立宾","黄培杰","李伟博","李伟杰",
        "梁锦杰","梁淇岚","刘洪好","刘栩祥","沈志军","唐林逸",
        "徐景祥","朱明辉","彭彦宁","张健","丘永才","詹永栋",
    };
    //刷新每个学生名字频率控制 
    const int FREQ = 30000000;
    const int STUDENT_SIZE = 42;
    const int NAME_MAX_SIZE = 20;

    int luck = 0;
    printf("输入你的幸运号：
");
    //等待用户输入幸运号码，用来生成随机种子 
    scanf("%d",&luck);
    printf("
");
    int j=0,i=0;
    char *cpt = &students[0][0];
    //每次使用不同的种子 
    srand(luck+(int)time(NULL));
    while(j++<21)
    {
        //随机选择学生 
        cpt = students[Random(STUDENT_SIZE)];
        print_name(cpt,NAME_MAX_SIZE);
        for(i=0;i<FREQ;i++);
        //刷新控制台 
        printf("
"); 
    }
    //打印中奖信息 
    printf("


");
    printf("-----------恭喜你中奖了-------------


");
    int si = 4;
    while(si--) print_name(cpt,NAME_MAX_SIZE);
}



//打印字符串函数 
void print_name(char *pt,int max_size){
    while(max_size--){
    printf("%c",*pt);
    pt++;
    }
}