本文目录一览：
怎样用C语言制作姓名抽签器上课抽签用
用随机数抽出号数，可以用switch case将号数的主人打印出来
#include stdio.h
#include time.h
#include stdlib.h
int main()
{
int a = 0;
srand((unsigned)time(NULL));
a = rand()%40 + 1; /*1到40号中抽出一个*/
printf("%d\n",a);
return 0;
}
c语言程序设计——抽奖程序
真不好玩，写好还真不简单~
中意的话，多加点分！测试过了～
/*
预先将参加抽奖者的资料输入存储起来，主要用结构体数组实现，用结构体表示每项记录，包括身份证号码、姓名、电话、住址等信息。开始抽奖时，屏幕上快速闪动参与者的身份证号码，按任意键停止闪动，把中奖人的信息用显示在屏幕上。可反复抽出一、二、三等奖若干名。
设计实现以下功能：
（1）录入：完成抽奖者信息的输入；
（2）删除：完成抽奖者信息的删除；
（3）修改：允许对已经录入的数据重新进行编辑、修改；
（4）显示：显示所有中奖者的信息；
（5）抽奖：
a. 抽出一等奖 1 名，如果抽过就不能再抽；
b. 抽出二等奖 2 名，如果抽完就不能再抽；
c. 抽出三等奖 5 名，如果抽完就不能再抽；
（6）退出程序。*/
#includestdio.h
#include conio.h
#include stdlib.h
#include memory.h
#include string.h
#include time.h
#define AWARDER_NUM 10
typedef struct tag_award
{
char ID[20];
char name[20];
char telNo[20];
char address[50];
}AWARDER;
AWARDER * awarder = new AWARDER[AWARDER_NUM];
int first_award[1] = {-1};
int second_award[2] = {-1,-1};
int third_award[5] ={-1,-1,-1,-1,-1};
int awarder_num = 0;
void info_login()
{
if(awarder_num = AWARDER_NUM)
{
AWARDER * new_awarder = new AWARDER[awarder_num + AWARDER_NUM];
memcpy(new_awarder,awarder,awarder_num*sizeof(AWARDER));
delete awarder;
awarder = new_awarder;
}
printf("身份证号：");
scanf("%s",awarder[awarder_num].ID);
printf("姓名：");
scanf("%s",awarder[awarder_num].name);
printf("电话号码：");
scanf("%s",awarder[awarder_num].telNo);
printf("家庭住址：");
scanf("%s",awarder[awarder_num].address);
awarder_num++;
}
void info_delete()
{
char name[20];
printf("输入您要删除的抽奖者的姓名：");
scanf("%s",name);
for(int i=0;iawarder_num;i++)
{
if (strcmp(awarder[i].name,name) == 0)
{
printf("您选择删除的抽奖者的信息如下：\n");
printf("身份证号：%s\n",awarder[i].ID);
printf("姓名：%s\n",awarder[i].name);
printf("电话号码：%s\n",awarder[i].telNo);
printf("家庭住址：%s\n",awarder[i].address);
break;
}
}
if(i == awarder_num)
{
printf("没有找到您输入的抽奖者！\n");
}
else
{
char c;
printf("您确定要删除吗？(Y//N)");
fflush(stdin);
scanf("%c",c);
if(c == 'Y' || c == 'y')
{
AWARDER * new_award = new AWARDER[awarder_num-1];
if(i = 0)
memcpy(new_award,awarder+1,sizeof(AWARDER) * (awarder_num - 1));
else if( i = awarder_num -1)
memcpy(new_award,awarder,sizeof(AWARDER) * (awarder_num - 1));
else
{
memcpy(new_award,awarder,sizeof(AWARDER) * i);
memcpy(new_award+i,awarder+i+1,sizeof(AWARDER) * (awarder_num - i - 1));
}
awarder_num--;
delete awarder;
awarder = new_award;
}
}
}
void info_modify()
{
char name[20];
printf("输入您要修改的抽奖者的姓名：");
scanf("%s",name);
for(int i=0;iawarder_num;i++)
{
if (strcmp(awarder[i].name,name) == 0)
{
printf("您选择的抽奖者的信息如下：\n");
printf("身份证号：%s\n",awarder[i].ID);
printf("姓名：%s\n",awarder[i].name);
printf("电话号码：%s\n",awarder[i].telNo);
printf("家庭住址：%s\n",awarder[i].address);
break;
}
}
if(i == awarder_num)
{
printf("没有找到您输入的抽奖者！\n");
}
else
{
printf("请输入该抽奖者的新信息：\n");
printf("身份证号：");
scanf("%s",awarder[i].ID);
printf("姓名：");
scanf("%s",awarder[i].name);
printf("电话号码：");
scanf("%s",awarder[i].telNo);
printf("家庭住址：");
scanf("%s",awarder[i].address);
}
}
bool check_over(int cur_award,int awarderNo)
{
if(awarderNo == 1)
{
if(cur_award == first_award[0])
return true;
}
else if(awarderNo = 3)
{
if(cur_award == first_award[0])
return true;
for(int i=0;iawarderNo-1;i++)
if(cur_award == second_award[i])
return true;
}
else if(awarderNo = 8)
{
if(cur_award == first_award[0])
return true;
for(int i=0;i2;i++)
if(cur_award == second_award[i])
return true;
for(i=0;iawarderNo-3;i++)
if(cur_award == third_award[i])
return true;
}
return false;
}
void award()
{
if(awarder_num 8)
{
printf("人数太少，请添加足够的人再抽奖！\n");
return;
}
srand((long)time(0));
char hit_id[20];
printf("\n开始抽第一等奖（1名），按任意键开始...\n");
getch();
while(!kbhit())
{
first_award[0] = rand() % awarder_num;
memcpy(hit_id,awarder[first_award[0]].ID,18);
printf("\r ");
printf("\r %s",hit_id);
}
printf("\n\n开始抽第二等奖（2名）");
for (int i=0;i2;i++)
{
printf("\n第%d个二等奖,按任意键开始...\n",i+1);
getch();
while(!kbhit())
{
second_award[i] = rand() % awarder_num;
while(check_over(second_award[i],1+i))
second_award[i] = rand() % awarder_num;
memcpy(hit_id,awarder[second_award[i]].ID,18);
printf("\r ");
printf("\r %s",hit_id);
}
}
printf("\n\n开始抽第三等奖（5名）");
for (i=0;i5;i++)
{
printf("\n第%d个三等奖,按任意键开始...\n",i+1);
getch();
while(!kbhit())
{
third_award[i] = rand() % awarder_num;
while(check_over(third_award[i],3+i))
third_award[i] = rand() % awarder_num;
memcpy(hit_id,awarder[third_award[i]].ID,20);
printf("\r ");
printf("\r %s",hit_id);
}
}
}
void info_show()
{
printf("一等奖获得者：\n");
printf("\t身份证号：%s\n",awarder[first_award[0]].ID);
printf("\t姓名：%s\n",awarder[first_award[0]].name);
printf("\t电话号码：%s\n",awarder[first_award[0]].telNo);
printf("\t家庭住址：%s\n",awarder[first_award[0]].address);
printf("二等奖获得者：\n");
for (int i=0;i2;i++)
{
printf("第%d个二等奖获得者：\n");
printf("\t身份证号：%s\n",awarder[second_award[i]].ID);
printf("\t姓名：%s\n",awarder[second_award[i]].name);
printf("\t电话号码：%s\n",awarder[second_award[i]].telNo);
printf("\t家庭住址：%s\n",awarder[second_award[i]].address);
}
printf("三等奖获得者：\n");
for (int i=0;i5;i++)
{
printf("第%d个三等奖获得者：\n");
printf("\t身份证号：%s\n",awarder[third_award[i]].ID);
printf("\t姓名：%s\n",awarder[third_award[i]].name);
printf("\t电话号码：%s\n",awarder[third_award[i]].telNo);
printf("\t家庭住址：%s\n",awarder[third_award[i]].address);
}
}
/*提示信息*/
bool raise()
{
printf("\n请输入你需要的操作代号：\n");
printf("\t1.录入：完成抽奖者信息的输入;\n");
printf("\t2.删除：完成抽奖者信息的删除;\n");
printf("\t3.修改：允许对已经录入的数据重新进行编辑、修改;\n");
printf("\t4.抽奖：开始抽奖！\n");
printf("\t5.显示：显示所有中奖者的信息;\n");
printf("\t6.退出。\n");
printf("==");
int operate;
fflush(stdin);
scanf("%d",operate);
switch(operate)
{
case 1:
info_login();
break;
case 2:
info_delete();
break;
case 3:
info_modify();
break;
case 4:
award();
break;
case 5:
info_show();
break;
case 6:
return false;
default:
break;
}
printf("\n操作完成。\n");
return true;
}
void main()
{
while(raise());
}
急 求c语言随机抽取姓名源码
#include stdio.h
#include stdlib.h
#include time.h
struct
{
char str[20]; //名字
int no; //号码
}a[99]={{" ",0}}; //初始化
int main()
{
FILE *fp;
char ch;
int i,n=0,choice,who;
fp=fopen("name.txt","r");
if(fp==NULL)
{
printf("can not open the file\n");
return 1;
}
while((ch=fgetc(fp))!=EOF)
{
if(ch=='\n')n++; //一行一个名字，计算人数
}
rewind(fp);
for(i=0;in;i++)
{
a[i].no=i; //每人对应的号码
fscanf(fp,"%s\n",a[i].str);
}
srand(time(NULL));
for(i=1;in;i++)
{
printf("=============\n1.抽取 0.退出\n=============\n");
scanf("%d",choice);
if(choice==1)
{
loop:
who=rand()%n+1;
if(a[who].no==0)goto loop;
puts(a[who].str);
a[who].no=0; //抽取过的标志为0
}
else break;
}
fclose(fp);
return 0;
}
用c语言编写一个简易的抽奖程序，
用data.txt文件保存以下内容：
13725528132 李桂荣
13725528131 李二来
13725528133 张荣刚
13725528130 荣南
13725528137 王三
13725528138 吴立
13725528139 郭德纲
13725528140 周星驰
13725528141 张曼玉
13725528142 张艺谋
13725528152 秦香莲
13725528162 潘金莲
13725528172 李大嘴
13725528182 展堂
//源代码如下
#include stdio.h
#include stdlib.h
#include time.h
#define MAX_NUM 9999
//定义保存人名和电话的数据结构
struct Person
{
char name[20];
char telno[15];
char award;
};
int num = 0; //统计人数
FILE *fp; //文件指针
Person persons[MAX_NUM]; //定义数组
int awarder_1[1] = {-1}; //一等奖
int awarder_2[2] = {-1, -1}; //二等奖
int awarder_3[5] = {-1, -1, -1, -1, -1};//三等奖
//读取文件
void readdata()
{
int i = 0; //数组下标
Person person;
//文件打开
fp = fopen("data.txt", "r");
if (fp == NULL)
{
printf("打开文件data.txt失败!\n");
return;
}
//当文件不为空
while (!feof(fp))
{
num ++;
fscanf(fp, "%s", person.telno);
fscanf(fp, "%s", person.name);
person.award = 'F';
persons[i++] = person;
}
}
//初始化标识
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);
}
void 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 (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();
return;
}
