单人项目

1 #include <stdio.h>
	2 #include <stdlib.h>
	3 #include <time.h>
	4 #include <math.h>
	5
	6 int main()
	7 {
	8 int i=0;
	9 int n=0;
	10 int x=0;
	11 int type;
	12 char flag;
	13 int left, right;
	14 float result;
	15 printf("请输入要出的题目数量 ");
	16 scanf("%d",&n);
	17 srand(unsigned(time(NULL)));
	18 while(x<n)
	19 {
	20 type = rand() % 4;
	21 left = rand() % 100;
	22 right = rand() % 100;
	23 switch(type)
	24 {
	25 case 0:
	26 printf("%d + %d = ? ", left, right);
	27 break;
	28 case 1:
	29 printf("%d - %d = ? ", left, right);
	30 break;
	31 case 2:
	32 printf("%d * %d = ? ", left, right);
	33 break;
	34 case 3:
	35 printf("%d / %d = ? ", left, right);
	36 break;
	37 }
	38
	39 i++;
	40 while(i>=n)
	41 {
	42 printf("一共 %d 题 ",i);
	43 printf("继续?[Y/N] ");
	44 fflush(stdin);
	45 scanf("%c",&flag);
	46 if(flag=='Y'||flag=='y')
	47 {
	48 printf("请输入要出的题目数量 ");
	49 scanf("%d",&n);
	50 i=0;
	51 break;
	52 }
	53 printf("谢谢使用！ ");
	54 fflush(stdin);
	55 getchar();
	56 return 0;
	57 }
	58 }
	59 }

https://github.com/201510411422/Nein44444444444