c++ 随机抽奖 入门级示例源码

【实例简介】在生成的同级目录 增加 data.txt 其中为 抽奖人员名单

【实例截图】

【核心代码】void init()
{
for(int i = 0; i < num; i )
{
persons[i].award = 'F';
}
}
//显示单个中奖信息
void info( int i)
{
printf("手机号码: %s 姓名: %s\n", persons[i].telno, persons[i].name);
}
int main()
{
char again = 'Y';
//读取文件
readdata();
printf("简单抽奖程序\n");
srand((long)time(0));
while(again == 'Y' || again == 'y')
{
//初始化标识
init();
printf("\n开始抽第一等奖(1名)，按任意键开始...\n");
getchar();
awarder_1[0] = abs(rand() % num);
while (persons[awarder_1[0]].award == 'T')
{
awarder_1[0] = rand() % num;
}
persons[awarder_1[0]].award = 'T';
info(awarder_1[0]);
printf("\n开始抽第二等奖(2名)\n");
for (int i = 0; i < 2; i )
{
printf("\n第%d个二等奖,按任意键开始...\n", i 1);
getchar();
awarder_2[i] = rand() % num;
while (persons[awarder_2[i]].award == 'T')
{
awarder_2[i] = rand() % num;
}
persons[awarder_2[i]].award = 'T';
info(awarder_2[i]);
}
printf("\n\n开始抽第三等奖(5名)\n");
for (int i = 0; i < 5; i )
{
printf("\n第%d个三等奖,按任意键开始...\n", i 1);
getchar();
awarder_3[i] = rand() % num;
while (persons[awarder_3[i]].award == 'T')
{
awarder_3[i] = rand() % num;
}
persons[awarder_3[i]].award = 'T';
info(awarder_3[i]);
}
printf("\n是否重新开始抽奖?(Y or N)...\n");
again = getchar();
}
getchar();
 
}