20194713+自动生成四则运算题第一版报告

 1 main()
 2 {    
 3     
 4     int rand_1,rand_2,rand_3,i;
 5     int rand_4,store=0;
 6     int number,temp,number_1;
 7     srand((unsigned)time(NULL));//生成随机种子 
 8     printf("请输入您要生成题目的数量\n");
 9     scanf("%d",&number);//定义输入控制循环变量 
10     printf("0 代表加减乘除随机生成\n1 代表加\n2 代表减\n3 代表乘\n4 代表除\n");
11     scanf("%d",&temp);//选项 
12     number_1=number;
13     while(number>=1)
14     {    
15     
16             switch(temp)//选项内容 
17         {
18             case 0: number--;break;//退出循环 
19                 
20             
21             case 1: rand_1= rand()%100;    //随机种子 
22                     rand_2= rand()%100;
23                     rand_3=rand_1+rand_2;//运算 
24                     if(rand_3<1000)
25                         number--;//计次 
26                         else
27                         break; 
28                     printf("%d+%d=%d\n",rand_1,rand_2,rand_3);
29                     number_1=0;
30                     break;//退出循环  
31            
32             case 2: rand_1= rand()%100;    
33                     rand_2= rand()%100;
34                     rand_3=rand_1-rand_2;
35                     if(rand_3<1000)
36                         number--;
37                         else
38                         break;
39                     printf("%d-%d=%d\n",rand_1,rand_2,rand_3);
40                      number_1=0;
41                     break; 

 1 if(number_1>=1)//查看时候进行上面的算法满足则进行 
 2 {
 3     
 4     
 5     while(1)//死循环 
 6 {        
 7             rand_4=rand()%100;
 8             rand_4=rand_4/10;//生成随机数 
 9 //+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
10             if(rand_4>=0&&rand_4<=3)//产生随机选择四个运算 
11 {            
12             
13             switch(rand_4)
14 {
15     case 0:
16                     rand_1= rand()%100;    //此处同上 
17                     rand_2= rand()%100;
18                     rand_3=rand_1+rand_2;
19                     if(rand_3<1000)
20                         store++;
21                        else
22                         break;
23                     printf("%d+%d=%d\n",rand_1,rand_2,rand_3);
24                     break;