設計思路：隨機兩個兩位數，再隨機產生一個+-*/符號，連線兩個數。將正確答案存和答案比較，用來判斷正誤。

程式碼：

 1 #include<iostream.h>
 2 #include<stdlib.h>
 3 #include<time.h>
 4 void boom()
 5 {
 6 float x,y;
 7 int a,b; 
 8 int first_num,second_num;
 9 srand(time(NULL));
10 int n;
11 float k;
12 float d;
13 float daan[100];
14 int
 
 zq=0;
15 int cw=0;
16 cout<<"輸入題目數量："<<endl;
17 cin>>n; 
18 for(int i=0;i<n;i++)
19 {
20 
21 a=rand()%4;
22 first_num=rand()%100;
23 second_num=rand()%100;
24 a=rand()%4;
25 switch(a)
26 {
27 case 0:
28 cout<<i+1<<"、 "<<first_num<<"+"<<second_num<<"="
 
<<" ";
29 daan[i+1]=first_num+second_num;
30 break;
31 case 1:
32 cout<<i+1<<"、 "<<first_num<<"*"<<second_num<<"="<<" "; 
33 daan[i+1]=first_num*second_num;
34 break;
35 case 2:
36     if(first_num>second_num)
37     {cout<<i+1<<"、 "<<first_num<<"
 
-"<<second_num<<"="<<" ";
38 daan[i+1]=first_num-second_num;
39     }
40     else{
41         i=i-1;
42     }
43     daan[i+1]=first_num-second_num;
44 break;
45 case 3:
46 
47     if(y!=0&&first_num>second_num&&first_num%second_num==0)
48 {
49 cout<<i+1<<"、 "<<first_num<<"/"<<second_num<<"="<<" ";
50 }
51 else
52 {
53 i=i-1;
54 }
55 daan[i+1]=first_num/second_num;
56 break;
57 }
58 if((i+1)%3==0)
59 {
60 for(int c=0;c<=1;c++)
61 {
62 cout<<endl;
63 }
64 }
65 if((i+1)==n)
66 {
67 cout<<endl;
68 }
69 }
70 for(i=1;i<=n;i++)
71 {
72 cout<<"請答題:"<<endl;
73 cout<<i<<"、";
74 cin>>d;
75 if(d==daan[i])
76 {
77 cout<<"回答正確！"<<endl;
78 cout<<endl;
79 zq=zq+1;
80 }
81 else
82 {
83 cout<<"回答錯誤，正確答案為："<<" "<<daan[i]<<endl;
84 cout<<endl;
85 cw=cw+1;
86 }
87 }
88 k=(float)zq/n;
89 cout<<"答對數為："<<" "<<zq<<"個"<<endl;
90 cout<<"答錯數為："<<" "<<cw<<"個"<<endl;
91 cout<<"正確率為："<<" "<<k<<endl;
92 }
93 int main()
94 {
95 boom(); 
96 main();
97 return 0;
98 }

專案計劃總結：

執行截圖

團隊皁片：