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#include<stdio.h>
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#include<stdlib.h>
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#include<windows.h>
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#include<time.h>
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char reg_name[30]="",reg_pwd[10]="";
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char on_name[30],on_pwd[10];
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int t=0;
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int judge(int a,int b)
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{
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if(a==b)
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return 1;
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else
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return 0;
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}
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int mark(int a)
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{
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switch(a)
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{
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case 1:return 10;
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case 2:return 7;
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case 3:return 5;
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case 4:return 0;
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}
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}
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void again1()
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{
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printf("\n ******************************************\n");
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printf(" **** 是否再来一次? ****\n");
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printf(" **** 1.yes 2.no ****\n");
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printf(" **** 输入1或2来选择是否重新考试 ****\n");
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printf(" ******************************************\n ");
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}
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int again2()
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{
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int o;
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scanf("%d",&o);
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return o;
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}
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int random()
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{
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int a=rand()%51;
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return a;
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}
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void test()
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{
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int p,q,t,s,j,m,sm=0;
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for(int i=1;i<=10;i++)
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{
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p=random();
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q=random();
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if(p-q<0||p+q>50)
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i--;
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else
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{
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t=rand()%2;
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if(t==1)
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printf(" %-2d+%-2d=",p,q);
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else
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printf(" %-2d-%-2d=",p,q);
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for(int i=1;i<=3;i++)
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{
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scanf("%d",&s);
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if(t==1)
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j=judge(s,p+q);
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else
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j=judge(s,p-q);
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if(j==1)
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{
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m=mark(i);
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break;
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}
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else
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{
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if(i<3)
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printf(" 你还有%d次机会:",(3-i));
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else
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{
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if(t==1)
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printf(" 正确答案是%d\n",p+q);
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else
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printf(" 正确答案是%d\n",p-q);
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m=mark(i+1);
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}
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}
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}
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sm+=m;
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}
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}
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system("cls");
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printf(" 你的成绩是%d\n",sm);
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if(sm>90)
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printf(" 你的评价是：SMART");
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if(sm>80&&sm<=90)
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printf(" 你的评价是：GOOD");
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if(sm>70&&sm<=80)
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printf(" 你的评价是：OK");
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if(sm>=60&&sm<=70)
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printf(" 你的评价是：PASS");
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if(sm<60)
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printf(" 你的评价是：AGAIN");
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}
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void menu()
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{
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printf(" ******************************************\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** 1.开始考试 **\n");
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printf(" ** **\n");
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printf(" ** 2.退出考试 **\n");
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printf(" ** **\n");
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printf(" ** 3.考试说明 **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ******************************************\n");
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printf(" 输入数字代表你的选择：");
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}
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int switch1()
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{
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int u;
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scanf("%d",&u);
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switch(u)
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{
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case 1:system("cls");return u;
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case 2:system("cls");return u;
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case 3:printf(" 说明：每个人有三次考试机会，选择退出之后不能再次重新考试。\n");
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printf(" 做好考试准备之后请输入1\n ");
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printf(" 退出考试请输入2\n ");
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scanf("%d",&u);
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system("cls");
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return u;
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}
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}
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void regist()
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{
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system("pause");
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system("cls");
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printf("\n\n 欢迎使用小学生测验系统\n\n");
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while(1)
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{
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printf(" 请输入学号[不能大于10个字符]：");
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scanf("%s",reg_name);
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if(strlen(reg_name)<=10)
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{
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while(1)
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{
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printf("\n 请输入密码[密码长度为八位]：");
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scanf("%s",reg_pwd);
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if(strlen(reg_pwd)==8)
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{
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printf("\n\n 注册成功，您的用户名是%s,密码是%s\n\n",reg_name,reg_pwd);
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break;
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}
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else
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{
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printf("\n 密码的长度为%d，请重新输入\n",strlen(reg_pwd));
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}
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}
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break;
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}
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else
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{
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printf("\n 用户名的长度为%d，请重新输入\n\n",strlen(reg_name));
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}
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}
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system("pause");
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}
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int judgereg()
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{
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if(strcmp(reg_name,"")==0&&strcmp(reg_pwd,"")==0)
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{
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printf("\n\n 您尚未注册，请先注册！\n\n");
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return 0;
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}
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else
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{
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return 1;
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}
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}
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void dl()
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{
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int i;
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system("pause");
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system("cls");
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printf("\n\n 欢迎使用小学生测验系统\n\n");
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for(i=1;i<=3;i++)
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{
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printf(" 请输入用户名:");
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scanf("%s",on_name);
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printf("\n 请输入密 码:");
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scanf("%s",on_pwd);
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if(strcmp(reg_name,on_name)==0&&strcmp(reg_pwd,on_pwd)==0)
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{
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printf("\n\n 登录成功，欢迎使用小学生测验系统\n\n");
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system("pause");
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t=1;
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break;
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}
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else
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{
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printf("\n\n 登录失败，请重新登录，您还有%d次机会\n\n",3-i);
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system("pause");
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}
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}
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}
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void start()
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{
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int id;
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while(!t)
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{
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system("cls");
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printf(" ******************************************\n");
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printf(" ** 欢迎使用小学生测验系统 **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** 1.注册 **\n");
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printf(" ** **\n");
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printf(" ** 2.登录 **\n");
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printf(" ** **\n");
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printf(" ** 0.退出 **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ** **\n");
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printf(" ******************************************\n");
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printf(" 请选择功能编号：");
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scanf("%d",&id);
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switch(id)
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{
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case 1:regist();break;
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case 2:
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if(judgereg()==1)
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dl();
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break;
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case 0:exit(1);system("pause");break;
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default:
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printf("\n 您输入的功能编号有误，请重新输入！\n");
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system("pause");
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}
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}
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}
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int main(void)
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{
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srand(time(NULL));
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system("color F4");
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start();
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system("cls");
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menu();
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int i;
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if(switch1()!=2)
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{
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test();
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for(i=1;i<=2;i++)
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{
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again1();
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if(again2()==2)
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{
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system("cls");
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break;
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}
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else
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{
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system("cls");
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test();
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}
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}
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}
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printf(" 考试结束。\n");
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system("pause");
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return 0;
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}
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