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#include<stdio.h>
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#include<stdlib.h>
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#include<time.h>
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//定义习题结构
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struct test{
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char fuhao;
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int a; //其中一个加数或者减数
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int b; //另一个加数或者减数
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int rezult; //两数只差或者两数之和
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}qst[10]; //10道题目question
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void jiemian(); //界面
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void xitong(); //系统生成题目
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int dati(); //学生答题模块
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void pingjia(); //最终评价
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int main()
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{
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jiemian();
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xitong();
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pingjia();
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return 0;
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}
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//界面
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void jiemian()
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{
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int kind; //是否开始考试
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printf("此测验适用于小学1、2年级\n");
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printf("-----------------------------\n");
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printf("如果准备好请按 1 开始答题\n");
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printf("-----------------------------\n");
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scanf("%d",&kind);
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while(kind!=1)
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{
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printf("输入错误，请重新输入1\n");
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scanf("%d",&kind);
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}
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printf("系统正在自动生成题目\n");
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printf("-----------------------------\n");
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printf("祝你测试愉快!\n");
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printf("-----------------------------\n");
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printf("现在开始答题\n");
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printf("---------------------\n");
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}
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//系统生成题目
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void xitong()
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{
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int a; //a为随机一个数，用来判断做加法还是减法
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int b,c; //b,c为加数减数
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int i; //次数
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srand(time(NULL));
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for(i=0;i<10;i++){
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a=rand();
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b=rand()%51;
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c=rand()%51;
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if(a%2==0)
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{
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qst[i].fuhao='+';
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while(b+c>50)
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{
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b=rand()%51; //判断两数之和是否超纲
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c=rand()%51;
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}
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}
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else
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{
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qst[i].fuhao='-';
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if(b<c)
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{
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int t;
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t=b;
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b=c;
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c=t; //将大数置为被减数，小数位减数
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}
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}
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qst[i].a=b;
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qst[i].b=c;
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if(a%2==0) qst[i].rezult=b+c;
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else qst[i].rezult=b-c;
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}
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/* for(i=0;i<10;i++)
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printf("第%d题为；%d%c%d=\n\n",i+1,qst[i].a,qst[i].fuhao,qst[i].b); */
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}
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//学生答题模块
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int dati()
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{
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int i; //循环次数
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int stuanswer; //学生答案
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int count=3; //每题的可答题次数
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int grade=0; //学生成绩
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for(i=0;i<10;i++)
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{
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printf("第%d题为；%d%c%d=\n",i+1,qst[i].a,qst[i].fuhao,qst[i].b);
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scanf("%d",&stuanswer);
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if(stuanswer==qst[i].rezult)
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printf("恭喜你答对了！\n");
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while(stuanswer!=qst[i].rezult&&count>0)
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{
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printf("很遗憾你答错了\n");
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count--;
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if(count==0)
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break;
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printf("你还有%d次机会\n",count);
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printf("请重新输入你的答案: ");
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scanf("%d",&stuanswer);
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}
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switch(count)
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{
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case 0:
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printf("很遗憾此题你没有得到分数\n");
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printf("此题的正确答案为 %d\n",qst[i].rezult); break;
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case 1:
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printf("此题你得到分数的分数为5分\n"); grade+=5; break;
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case 2:
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printf("此题你得到分数的分数为7分\n"); grade+=7; break;
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case 3:
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printf("此题你得到分数的分数为10分\n"); grade+=10; break;
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}
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printf("你目前的总分为%d\n\n",grade);
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count=3; //重置计数次数
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}
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return grade; //返回最终成绩进行判断
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}
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//最终评价
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void pingjia()
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{
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int grade;
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grade=dati();
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printf("你的总分为%d\n",grade);
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printf("你最终的评价；\n");
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grade/=10;
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switch(grade){
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case(10):
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case(9):
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printf("SMART\n"); break;
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case(8):
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printf("GOOD\n"); break;
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case(7):
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printf("OK\n"); break;
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case(6):
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printf("PASS\n"); break;
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default:
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printf("TRY AGAIN\n"); break;
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}
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}
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