实验3 c语言函数应用编程

task1

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 
 7 void print_text(int line, int col,char text[]);
 8 void print_spaces(int n);
 9 void print_blank_lines(int n);
10 
11 int main(){
12     int line,col,i;
13     char text[N] = "hi,November";
14 
15     srand(time(0));
16 
17     for(i = 1;1 <= 10 ;++i)
18     {
19         line = rand() % 25;
20         col = rand() % 80;
21         print_text(line,col,text);
22         sleep(1000);
23     }
24     return 0;
25 
26 
27 }
28 
29 void print_spaces(int n){
30     int i;
31 
32     for(i = 1;i <= n ; i++)
33         printf(" ");
34 
35 
36 }
37 
38 void print_blank_lines(int n){
39     int i;
40 
41     for(i = 1;i <= n ; i++)
42         printf("\n");
43 
44 
45 }
46 
47 void print_text(int line,int col,char text[]){
48     print_blank_lines(line-1);
49     print_spaces(col-1);
50     printf("%s",text);
51 
52 
53 }

1 结果

task 2

2 源代码

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 long long fac(int n);
 4 
 5 int main(){
 6     int i,n;
 7 
 8     printf("Enter n: ");
 9     scanf("%d",&n);
10     for(i = 1;i <=n ;++i)
11         printf("%d!=%lld\n",i,fac(i));
12     system("pause");
13     return 0;
14 
15 }
16 
17 long long fac(int n){
18     static long long p = 1;
19 
20     p = p*n;
21 
22     return p;
23 
24 }

2结果

task2_2

源代码

 1 #include<stdio.h>
 2 #include<stdlib.h>
 3 int func(int ,int);
 4 
 5 int main(){
 6     int k = 4,m=1,p1,p2;
 7 
 8     p1 = func(k,m);
 9     p2 = func(k,m);
10     printf("%d,%d\n",p1,p2);
11     system("pause");
12     return 0;
13 
14     ;
15 }
16 int func(int a,int b){
17     static int m = 0,i = 2;
18 
19     i += m + i;
20     m = i + a + b;
21 
22     return m;
23 
24 
25 }

结果

 task3_3

源代码

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

结果

task 3_4

源代码

 迭代

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

结果

递归

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

 task3_5

源代码

 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 i =0;
 6 int main(){
 7     unsigned int n;
 8     
 9     
10     while(scanf("%u",&n)!=EOF)
11     {
12         hanoi(n,'A','B','C');
13         printf("一共移动了%d次",i);
14         i=0;
15         
16         
17     }
18     system("pause");
19      return 0;
20 
21 }
22 void hanoi(unsigned int n ,char from,char temp,char to)
23 {
24     
25     if(n==1){
26         moveplate(n,from,to);
27        
28     }
29     else
30     {
31         hanoi(n-1,from,to,temp);
32         
33         moveplate(n,from,to);
34         hanoi(n-1,temp,from,to);
35         
36     }
37 }
38 void moveplate(unsigned int n,char from,char to)
39 {
40     
41     printf("%u:%c-->%c\n",n,from,to);
42     i++;
43 }

 task3_6

源代码

 1 #include<stdio.h>
 2 #include<math.h>
 3 long func(long s);
 4 
 5 int main(){
 6 
 7     long s, t;
 8 
 9     printf("Enter a number:");
10     while(scanf("%ld",&s)!=EOF){
11         t = func(s);
12         printf("new numberm is:%ld\n\n",t);
13         printf("Enter a number:");
14     
15     
16     }
17 
18     return 0;
19 }
20 long func(long s){
21     int n,m;
22     long long k=0,d=0;
23     
24     while(s>0){
25         m=s%10;
26         if(m%2==0)
27             printf(" ");
28         else
29             k=k*10+m;
30         s=s/10;
31 
32     }
33     while(k>0){
34         n=k%10;
35         d=d*10+n;
36         k=k/10;
37     
38     
39     
40     }
41     return d;
42 
43 }

结果