commit 798dc613655f6deda6e1b7d1695d9950d012dc29
Author: 段巧 <18408200225@stu.hut.edu.cn>
Date:   Mon Jan 7 19:27:28 2019 +0800

    first commit

diff --git a/小学生测验最终版.cpp b/小学生测验最终版.cpp
new file mode 100644
index 0000000..49943cc
--- /dev/null
+++ b/小学生测验最终版.cpp
@@ -0,0 +1,138 @@
+#include<stdlib.h>
+#include<stdio.h>
+#include<time.h>
+#include<math.h>
+using namespace std;
+typedef struct node
+{
+int jiajian;
+int num1;
+int num2;
+int trytimes;
+}specific;
+specific informat[10];
+void changesi(int p)
+{
+if(p==0)
+printf("+");
+if(p==1)
+printf("-");
+}
+int getgrade(int m)
+{
+if(m==0)
+return 10;
+if(m==1)
+return 7;
+if(m==2)
+return 5;
+if(m==3)
+return 0;
+}
+int suijishu(int &a,int &b,int &c,int t)
+{
+int a1,b1;
+do
+{
+a1=rand()%50;
+b1=rand()%50;
+}while(!(a1+b1>=0&&a1+b1<+50&&a1-b1>=0&&a1-b1<=50));
+informat[t].num1=a=a1;
+informat[t].num2=b=b1;
+informat[t].jiajian=c=rand()%2;
+return 0;
+}
+void show_rank(int sum)
+{
+printf("\n\n");
+printf("�ܷ֣�%d\n",sum);
+if(sum>=90)
+printf("SMART\n");
+else if(sum<90&&sum>=80)
+printf("GOOD\n");
+else if(sum<80&&sum>=70)
+printf("OK\n");
+else if(sum<70&&sum>=60)
+printf("PASS\n");
+else
+printf("TRE AGAIN\n");
+}
+int main()
+{
+srand(time(NULL));
+printf("----------pupil exercise system----------\n"); 
+int t=1,cnt=0,sum=0,a,b,c,ans;
+while(t<=10)
+{
+printf("this is the %d question\n",t);
+suijishu(a,b,c,t);
+while(cnt<=3)
+{
+if(c==0)
+{
+printf("%d+%d=",a,b);
+scanf("%d",&ans);
+if(a+b==ans)
+{
+printf("Right\n");
+break;
+}
+else
+{
+cnt++;
+printf("Wrong!!\n");
+if(cnt==3)
+{
+printf("anwser is:%d\n",a+b);
+break;
+}
+}
+}
+else if(c==1)
+{
+printf("%d-%d=",a,b);
+scanf("%d",&ans);
+if(a-b==ans)
+{
+printf("Right\n");
+break;
+}
+else
+{
+cnt++;
+printf("Wrong!!\n");
+if(cnt==3)
+{
+printf("anwser is:%d\n",a-b);
+break;
+}
+}
+}
+}
+informat[t].trytimes=cnt;
+if(cnt==0)
+sum+=10;
+if(cnt==1)
+sum+=7;
+if(cnt==2)
+sum+=5;
+t++;
+cnt=0;
+printf("\n\n");
+printf("--------------------\n");
+}
+show_rank(sum);
+printf("\n\n");
+for(int i=1;i<=10;i++)
+{
+printf("��%d��:%d",i,informat[i].num1);
+changesi(informat[i].jiajian);
+printf("%d=",informat[i].num2);
+if(informat[i].jiajian==0)
+printf("%d\n",informat[i].num1+informat[i].num2);
+else if(informat[i].jiajian==1)
+printf("%d\n",informat[i].num1-informat[i].num2);
+printf("�����%d������%d��\n",informat[i].trytimes,getgrade(informat[i].trytimes));
+}
+return 0;
+}