实验二

任务一

 1 #include <stdio.h>
 2 #include <stdlib.h>
 3 #include <time.h>
 4 #define N 5
 5 #define N1 397
 6 #define N2 476
 7 #define N3 21
 8 int main() {
 9 int cnt;
10 int random_major, random_no;
11 srand(time(NULL)); // 以当前系统时间作为随机种子
12 cnt = 0;
13 while(cnt < N) {
14 random_major = rand() % 2;
15 if(random_major) {
16 random_no = rand() % (N2 - N1 + 1) + N1;//21 生成一个N1到N2之间的随机数 
17 printf("20248329%04d\n", random_no);
18 }
19 else {
20 random_no = rand() % N3 + 1;//25 生成一个1到N3之间的随机数
21 printf("20248395%04d\n", random_no);
22 }
23 cnt++;
24 }
25 system("pause");
26 return 0;
27 }//生成随机数,并通过运算输出5个学号

21
生成一个N1到N2之间的随机数并将值赋给random_no
25
生成一个1到N3之间的随机数并将值赋给random_no
生成随机数,并通过运算输出5个学号

任务二
 1 #include <stdio.h>
 2 #include <math.h>
 3 int main() {
 4 double a, b, c;
 5 double delta, p1, p2; // 用于保存中间计算结果
 6 while(scanf("%lf%lf%lf", &a, &b, &c) != EOF) {
 7 if(a == 0) {
 8 printf("a = 0, invalid input\n");
 9 continue;
10 }
11 delta = b*b - 4*a*c;
12 p1 = -b/2/a;
13 p2 = sqrt(fabs(delta))/2/a;
14 if(delta == 0)
15 printf("x1 = x2 = %.2g\n", p1);
16 else if(delta > 0)
17 printf("x1 = %.2g, x2 = %.2g\n", p1+p2, p1-p2);
18 else {
19 printf("x1 = %.2g + %.2gi, ", p1, p2);
20 printf("x2 = %.2g - %.2gi\n", p1, p2);
21 }
22 }
23 return 0;
24 }

 

任务三

 1 #include<stdio.h>
 2 
 3 int main(){
 4 char light;
 5 while(scanf("%c",&light) !=EOF){
 6     getchar();
 7     if(light == 'r'){
 8         printf("stop!\n");}
 9     if(light =='g'){
10         printf("go go go\n");}
11     if(light == 'y'){
12         printf("wait a minute\n");}
13     if( (light != 'r' && light !='g')&& light != 'y'){
14         printf("something must be wrong...\n");}
15 }
16 return 0;
17 }

 

任务四

 1 #include<stdio.h>
 2 int main(){
 3 double a,max,min,sum;
 4 max = 0;
 5 min = 200000;
 6 sum = 0;
 7 while(scanf("%lf",&a) !=EOF){
 8     if(a == -1)
 9         break;
10     if(a < min)
11         min = a;
12     if(a > max)
13         max = a;
14     sum += a; 
15 }
16 printf("今日累计消费总额:%.1lf\n",sum);
17 printf("今日最高一笔开销:%.1lf\n",max);
18 printf("今日最低一笔开销:%.1lf\n",min);
19 return 0;
20 
21 
22 }

 

任务五
 1 #include<stdio.h>
 2 int main(){
 3 int a, b, c;
 4 while(scanf("%d %d %d",&a ,&b ,&c) !=EOF){
 5     if((a + b > c && b + c > a) && (a + c > b)){
 6         if((a * a == b * b + c * c||b * b == a * a + c * c)||(c * c == a * a + b * b) )
 7             printf("直角三角形\n");
 8         else{
 9             if((a == b || a == c) || b == c)
10                 if(a==b&&b==c)
11                     printf("等边三角形\n");
12                 else
13                     printf("等腰三角形\n");
14             else
15                 printf("普通三角形\n");
16         }}
17     else
18         printf("不能构成三角形\n");
19 }
20 return 0;
21 }

任务六

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<time.h>
 4 
 5 int main(){
 6     int day,a,t;
 7     t = 0;
 8     srand(time(NULL));
 9     day = (rand() % 30 + 1);
10     printf("猜猜2024年11月哪一天会是你的lucky day\n");
11     printf("开始喽,你有三次机会,猜吧(1~30):");
12     while(scanf("%d",&a)){
13         if(t == 2){
14             printf("次数用光啦。偷偷告诉你,11月你的lucky day是%d号\n",day);
15             break;}
16         if(a == day )
17             printf("哇,猜中了:)\n");
18         if(a > day){
19             printf("你猜的日期晚了,你的lucky day在前面哦\n");
20             printf("再猜(1~30):");}
21         if(a < day){
22             printf("你猜的日期早了,你的lucky day还没到呢\n");
23             printf("再猜(1~30):");}
24         t++;
25         
26     }
27         
28         
29     system("pause");
30     return 0;
31 
32 
33 
34 
35 }

 

posted @ 2024-10-09 17:30  Little_Zcy  阅读(8)  评论(0编辑  收藏  举报