实验3

任务1

源代码

 1 #include <stdio.h>
 2 #include <stdlib.h>
 3 #include <time.h>
 4 #include <windows.h>
 5 #define N 80
 6 void print_text(int line, int col, char text[]); // 函数声明
 7 void print_spaces(int n); // 函数声明
 8 void print_blank_lines(int n); // 函数声明
 9 int main() {
10 int line, col, i;
11 char text[N] = "hi, November~";
12 srand(time(0)); // 以当前系统时间作为随机种子
13 for(i = 1; i <= 10; ++i) {
14 line = rand() % 25;
15 col = rand() % 80;
16 print_text(line, col, text);
17 Sleep(1000); // 暂停1000ms
18 }
19 return 0;
20 } // 打印n个空格
21 void print_spaces(int n) {
22 int i;
23 for(i = 1; i <= n; ++i)
24 printf(" ");
25 } // 打印n行空白行
26 void print_blank_lines(int n) {
27 int i;
28 for(i = 1; i <= n; ++i)
29 printf("\n");
30 }
31 // 在第line行第col列打印一段文本
32 void print_text(int line, int col, char text[]) {
33 print_blank_lines(line-1); // 打印(line-1)行空行
34 print_spaces(col-1); // 打印(col-1)列空格
35 printf("%s", text); // 在第line行、col列输出text中字符串
36 }

结果

 

任务2

 1 #include <stdio.h>
 2 long long fac(int n); // 函数声明
 3 int main() {
 4 int i, n;
 5 printf("Enter n: ");
 6 scanf("%d", &n);
 7 for (i = 1; i <= n; ++i)
 8 printf("%d! = %lld\n", i, fac(i));
 9 return 0;
10 } // 函数定义
11 long long fac(int n) {
12 static long long p = 1;
13 printf("p = %lld\n", p);
14 p = p * n;
15 return p;
16 }

结果

任务3

 1 #include <stdio.h>
 2 long long func(int n); // 函数声明
 3 int main() {
 4 int n;
 5 long long f;
 6 while (scanf("%d", &n) != EOF) {
 7 f = func(n); // 函数调用
 8 printf("n = %d, f = %lld\n", n, f);
 9 } 
10 
11 return 0;
12 }
13  long long func(int n){
14      
15      long long sum=1;
16      if(n==1)
17      sum=1;
18      else
19      sum=2*func(n-1)+1;
20      
21      return sum;
22 
23  }

运行结果

 

任务4

 1 #include <stdio.h>
 2 
 3 int func(int n, int m);
 4 
 5 int main() {
 6 int n, m;
 7 while(scanf("%d%d", &n, &m) != EOF)
 8 printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
 9 return 0;
10 } 
11 int func(int n ,int m){
12     long long ans;
13     if(n-1==m)
14     ans=1;
15     else if(m==1)
16     ans=n;
17     else if(n<m)
18     ans=0;
19     else if(m==0)
20     ans=1;
21     else
22     ans=func(n-1,m)+func(n-1,m-1);
23     
24     return ans;
25     
26     
27 }

运行结果

 

 

任务5

 

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include<stdio.h>
 3 #include<stdlib.h>
 4 void hanoi(unsigned int n, char from, char temp, char to);
 5 void move(unsigned int n, char from, char to);
 6 int a;
 7 int main()
 8 {
 9     unsigned int n;
10     while (scanf("%d", &n) != EOF)
11     {
12         hanoi(n, 'A', 'B', 'C');
13         printf("共移动了%d次\n", a);
14         a = 0;
15     }
16     return 0;
17 }
18 void hanoi(unsigned int n, char from, char temp, char to)
19 {
20     a++;
21     if (n == 1)
22         move(n, from, to);
23     else
24     {
25         
26         hanoi(n - 1, from, to, temp);
27         move(n, from, to);
28         hanoi(n - 1, temp, from, to);
29         
30     }
31 }
32 void move(unsigned int n, char from, char to)
33 {
34     printf("%u:%c-->%c\n", n, from, to);
35 }

运行结果

实验6

 1 #define _CRT_SECURE_NO_WARNINGS
 2 #include <stdio.h>
 3 #include <math.h>
 4 long func(long s); // 函数声明
 5 int main() {
 6     long s, t;
 7     printf("Enter a number: ");
 8     while (scanf("%ld", &s) != EOF) {
 9         t = func(s); // 函数调用
10         printf("new number is: %ld\n\n", t);
11         printf("Enter a number: ");
12     }
13     return 0;
14 }
15 long func(long s)
16 {
17     int i, k, d = 1, sum = 0;
18     int a[10];
19     int b[10];
20     for (i = 0, k = 0; i < 10; i++)
21     {
22         a[i] = s % 10;
23         if (a[i] % 2 != 0)
24         {
25             b[k] = a[i];
26             k++;
27         }
28         s /= 10;
29     }
30     for (i = 0; i < k; i++)
31     {
32         sum += b[i] * d;
33         d *= 10;
34     }
35     return sum;
36 }

运行结果

 

posted @ 2023-10-30 17:28  飘窗的轩  阅读(20)  评论(0)    收藏  举报