实验二

task1.c源代码

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 #include<time.h>
 4 
 5 #define N 5
 6 #define N1 374
 7 #define N2 465
 8 
 9 int main()
10 {
11     int number;
12     int i;
13 
14     srand(time(0));
15 
16     for (i = 0; i < N; i++) {
17         number = rand() % (N2 - N1 + 1) + N1;//随机数生成赋予number的值
18         printf("202383290376%04d\n", number);
19     }
20 }

 作用：抽五个学号

task2.c源代码

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include<stdio.h>
 3 int main()
 4 {
 5     char a;
 6     while (scanf("%c", &a) != EOF)
 7     {
 8         getchar();
 9         switch (a)
10         {
11         default:
12             printf("something must be wrong...\n");
13             break;
14         case 'r':
15             printf("stop!\n");
16             break;
17         case 'g':
18             printf("go go go\n");
19             break;
20         case 'y':
21             printf("wait a minute\n");
22             break;
23             
24         }
25 
26     }
27 }

 task3.c源代码

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include<stdio.h>
 3 #include<stdlib.h>
 4 #include<time.h>
 5 int main()
 6 {
 7     srand(time(0));
 8     int x;
 9     int a = rand() % (30) + 1;
10     printf("猜猜2023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     for (int i = 1; i <= 3; ++i){
13         scanf("%d", &x);
14     
15         if (x < a)
16             printf("你猜的日期早了，你的lucky day还没到呢\n再猜（1~30）：");
17         else if (x > a)
18             printf("你猜的日期晚了，你的lucky day已经过啦\n再猜（1~30）：");
19         else
20             printf("哇，猜中了");
21     }
22     if (x != a)
23         printf("次数用完啦，偷偷告诉你：11月，你的lucky day是%d号", a);
24 }

 

 

 task4.c源代码

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include<stdio.h>
 3 #include<math.h>
 4 int main()
 5 {
 6     int n, a;
 7     while (scanf("%d%d", &n, &a) != EOF)
 8     {
 9         double s = 0;
10         double down = 0;
11         for (int i = 1; i <= n; ++i) {
12             down += pow(10, i - 1) * a;
13             s += i / down;
14         }
15         printf("n=%d,a=%d,s=%f", n, a, s);
16     }
17 }

 task5.c源代码

 

 1 #include<stdio.h>
 2 int main()
 3 {
 4     int c=1, l=1;
 5     for (l = 1; l <= 9; ++l) {
 6         for (c = 1; c <= l; ++c)        
 7             printf("%d*%d=%d  ", c, l, c*l);
 8         printf("\n");
 9     }
10 
11 }

 task6.c源代码

 

#define _CRT_SECURE_NO_WARNINGS
#include<stdlib.h>
#include<stdio.h>
void people(char a, char b, char c, int all, int n)
{
    int j;
    for (j = 0; j < n; j++)
        printf("   \t");
    int h;
    for (h = 2 * (all - n) - 1; h > 0; h--)
        printf("%c%c%c\t", a, b, c);
    printf("\n");}
int main() {
    int i=0, j=0, n=1;
    printf("input n:");
    scanf("%d", &n);
    for (i = 0; i < n; i++)
    {
        people(' ', 'o', ' ', n, i);
        people('<', 'H', '>', n, i);
        people('I', ' ', 'I', n, i);
    }
    return 0;

}

 

posted @ 2023-10-16 17:09  韷  阅读(24)  评论(0)    收藏  举报