实验3 C语言函数应用编程

 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 }
21 // 打印n个空格
22 void print_spaces(int n) {
23 int i;
24 for(i = 1; i <= n; ++i)
25 printf(" ");
26 }
27 // 打印n行空白行
28 void print_blank_lines(int n) {
29 int i;
30 for(i = 1; i <= n; ++i)
31 printf("\n");
32 }
33 // 在第line行第col列打印一段文本
34 void print_text(int line, int col, char text[]) {
35 print_blank_lines(line-1); // 打印(line-1)行空行
36 print_spaces(col-1); // 打印(col-1)列空格
37 printf("%s", text); // 在第line行、col列输出text中字符串
38 }

 1 // 利用局部static变量的特性，计算阶乘
 2 #include <stdio.h>
 3 long long fac(int n); // 函数声明
 4 int main() {
 5 int i, n;
 6 printf("Enter n: ");
 7 scanf("%d", &n);
 8 for (i = 1; i <= n; ++i)
 9 printf("%d! = %lld\n", i, fac(i));
10 return 0;
11 }
12 // 函数定义
13 long long fac(int n) {
14 static long long p = 1;
15 p = p * n;
16 return p;
17 }

 1 #include <stdio.h>
 2 int func(int, int);
 3 int main() 
 4 {
 5 int k = 4, m = 1, p1, p2;
 6 p1 = func(k, m); 
 7 p2 = func(k, m); 
 8 printf("%d, %d\n", p1, p2);
 9 return 0;
10 }
11 
12 int func(int a, int b) 
13 {
14 static int m = 0, i = 2;
15 i += m + 1;
16 m = i + a + b;
17 return m;
18 }

 1 #include <stdio.h>
 2 #include<stdlib.h>
 3 
 4 long long func(int n); 
 5 int main() 
 6 {
 7     int n;
 8     long long f;
 9     while (scanf("%d",&n)!=EOF) 
10     {
11         f = func(n); 
12         printf("n=%d, f=%lld\n",n,f);
13     }
14     system("pause");
15     return 0;
16 }
17 
18 long long func(int n)
19 {
20     int i;
21     long long s,m=1;
22     for(i=1;i<=n;i++)
23     {
24         m=m*2;
25     }
26     s=m-1;
27     return s;
28  } 

 1 #include <stdio.h>
 2 #include<stdlib.h>
 3 
 4 int func(int n,int m);
 5 int main() 
 6 {
 7     int n, m;
 8     while(scanf("%d%d", &n, &m) != EOF)
 9     printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
10     system("pause");
11     return 0;
12 }
13 
14 int func(int n,int m)
15 {
16     int i,d=1,f=1,c,a=n-m,b=1;
17     if(n==m)
18         return 1;
19     else if(n<m)
20         return 0;
21     else
22     {
23         for(i=1;i<=m;i++)
24         {
25             d*=(a+1);
26             f*=b;
27             a++;
28             b++;
29         }
30         c=d/f;
31         return c;
32     }
33 }

 1 #include <stdio.h>
 2 #include<stdlib.h>
 3 
 4 int func(int n,int m);
 5 int main() 
 6 {
 7     int n, m;
 8     while(scanf("%d%d", &n, &m) != EOF)
 9     printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
10     system("pause");
11     return 0;
12 }
13 
14 int func(int n,int m)
15 {
16     int i,d=1,f=1,c,a=n-m,b=1;
17     if(m==0)
18         return 1;
19     else
20     {
21         if(n==1)
22             return 1;
23         else
24             {
25                 if(m==n)
26                     return 1;
27                 else
28                     return func(n-1,m-1)+func(n-1,m);
29         }
30     }
31 }

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 void hanoi(unsigned int n, char from, char temp, char to);
 4 void moveplate (unsigned int n,char from,char to) ;
 5 int N=0;
 6 int main()
 7 {
 8     unsigned int n;
 9     while(1)
10     {
11         N=0;
12         scanf("%u",&n);
13         hanoi(n,'A','B','C');
14         printf("一共移动了%d次\n",N);
15     }
16     return 0;
17 }
18 
19 void hanoi (unsigned int n,char from,char temp,char to)
20 {
21     if(n==1)
22         moveplate(n,from,to);
23     else
24     {
25         hanoi(n-1,from,to,temp);
26         moveplate(n,from,to);
27         hanoi(n-1,temp,from,to);
28     }
29     N++;
30 }
31 
32 void moveplate (unsigned int n,char from,char to)
33 {
34     printf("%u:%c-->%c\n",n,from,to);
35 }

 1 #include <stdio.h>
 2 #include <math.h>
 3 long func(long s);
 4 int main() 
 5 {
 6     long s, t;
 7     printf("Enter a number: ");
 8     while (scanf("%ld", &s) != EOF) 
 9     {
10         t = func(s); 
11         printf("new number is: %ld\n\n", t);
12         printf("Enter a number: ");
13     }
14     return 0;
15 }
16 
17 long func(long s)
18 {
19      int a;
20      int b=1,c=0;
21          
22      while (s!=0) 
23      {
24          a=s%10;
25          if(a%2!=0&&s>10) 
26          {
27              c=c+b*a;
28              b=b*10;
29          }
30          else if(s<=10&&s%2!=0)
31         {
32              c=c+b*a;
33              b=b*10;
34          }
35          s=s/10;
36      }
37  
38      return c;
39  }