老师的福音！C++随机点名生成器

noip2018刚过，写了点小东西来愉悦身心。

用途：随机点名

原理：从exe文件同目录下的文档中导入人员信息（可以多重），通过rand+Hash实现，按空格键即可生成。

代码：

#include <bits/stdc++.h> 
#include <conio.h>
#include <windows.h>
static const int MAXN=101;//limit
using namespace std;
struct Information
{
    char name[MAXN];
}stu[MAXN];
bool vis[MAXN];
FILE *fp;
int num,cnt,randnum;
char ch,filename[MAXN],line[MAXN];
inline void copyright()
{
    puts("Program Name: Random Name.\n");
    Sleep(1000);
    puts("Design By:BeyondLimits.\n");
    Sleep(1000);
    puts("All rights reserved.\n");
    Sleep(1000);
}
inline void input()
{
    puts("Please input the file name of the name list.\n");
    gets(filename);
    fp=fopen(filename,"r");
    puts("Everything is ready.\n");
}
inline void work()
{
    while(fgets(line,sizeof(line)-1,fp)) if(line[0]!='\n'&&line[0]!=' ') sscanf(line,"%s\n",stu[cnt++].name);//input information
    srand(0);
    puts("Press Space to get a random name or press any other key to exit.\n");
    while((ch=getch())==' ')
    {
        randnum=rand()%cnt;
        while(vis[randnum]) randnum=rand()%cnt;
        vis[randnum]=true;
        printf("%s\n",stu[randnum].name);
        if(++num==cnt)
        {
            puts("Program has been exited.\n");
            puts("Thank you for your using.\n");
            return ;
        }
    }
}
int main()
{
    copyright();//copyright announce
    input();//input file name
    work();//main work
    return 0;
}