实验三

实验任务一

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
#define N 80
void print_text(int line, int col, char text[]);  
void print_spaces(int n);  
void print_blank_lines(int n); 
int main() {
 int line, col, i;
 char text[N] = "hi, November~";
 
 srand(time(0)); 
 
 for(i = 1; i <= 10; ++i) {
  line = rand() % 25;
  col =  rand() % 80;
  print_text(line, col, text);
  Sleep(1000);  // 
 }
 
 return 0;
}

void print_spaces(int n) {
 int i;
 
 for(i = 1; i <= n; ++i)
  printf(" ");
}

void print_blank_lines(int n) {
 int i;
 
 for(i = 1; i <= n; ++i)
  printf("\n");
 }

void print_text(int line, int col, char text[]) {
 print_blank_lines(line-1);   
 print_spaces(col-1);   
 printf("%s", text);        
}

随机出现 hi,Noveber

实验任务二

#include<stdio.h>
#include<stdlib.h>
long long fac(int );
int main(){
 int i,n;
 printf("Enter n :");
  scanf("%d",&n);
 for(i=1;i<=n;++i)
  printf("%d!=%lld\n",i,fac(i));
system("pause");
 return 0;
}
long long fac(int n)
{static long long p=1;
p=p*n;
return p;
 


}

 

 

#include<stdio.h>
#include<stdlib.h>
int func(int, int); 
int main() {
    int k = 4, m = 1, p1, p2;
    p1 = func(k, m);
    p2 = func(k, m);
    printf("%d, %d\n", p1, p2);
 system("pause");
    return 0;
}

int func(int a, int b) {
    static int m = 0, i = 2;
    i += m + 1;
    m = i + a + b;
    return m;
}                

一致

实验任务三

#include <stdio.h>
#include<stdlib.h>
long long func(int n);
int main() {
    int n;
    long long f;
    while (scanf("%d", &n) != EOF) {
        f = func(n);
        printf("n = %d, f = %lld\n", n, f);
    }
 system("pause");
    return 0;
}
long long func(int n){
 int i;
 if(n==1) return 1;
 else return 2*func(n-1)+1;
}

 

实验任务四

#include <stdio.h>
#include<stdlib.h>
int func(int n, int m);
int fac(int );
int main() {
    int n, m;
    while(scanf("%d%d", &n, &m) != EOF)
        printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
    system("pause");
    return 0;
}
int fac(int n)
{ int p=1;int i;
if(n>=1){
for(i=1;i<=n;++i)
 p=p*i;}
if(n==0) p=1;
return p;
}
int func(int n,int m){
return fac(n)/(fac(m)*fac(n-m));
}

　　

#include <stdio.h>
#include<stdlib.h>
int func(int n, int m);

int main() {
    int n, m;

    while(scanf("%d%d", &n, &m) != EOF)
        printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
    system("pause");
    return 0;
}

int func(int n,int m){
if (n==m) return 1;
else if(m==0)

return 1;
else if(n<m)
return 0;

return func(n-1,m)+func(n-1,m-1);

}

 

实验任务五

#include <stdio.h>
#include<stdlib.h>
int s=0;
void move(char,char);
void hn(int ,char,char ,char);
int main() {
    int n;
    char A,B,C;
   while(scanf("%d %c %c %c",&n,&A,&B,&C)!=EOF){
   hn(n,A,B,C);
   printf("一共移动%d次",s);
   s=0;
   }

    system("pause");
    return 0;
}
void move (char a,char b){
printf("%c-->%c\n",a,b);
++s;
}
void hn(int n,char b,char m,char e){
  if(n==1)
      move(b,e);
  else {
      hn(n-1,b,e,m);
    move(b,e);
    hn(n-1,m,b,e);
  }


}

实验任务六

#include <stdio.h>
#include<stdlib.h>
long func(long s);
int main() {
long s,t;
printf("Enter a number:");
while(scanf("%ld",&s)!=EOF){
t=func(s);
printf("new number is :%ld\n\n",t);
printf("Enter a number:");}

system("pause");
return 0;
}
long func(long s){
int b,i,k=-1;
double m=0;
do{
b=s%10;
if(b%2!=0) {m=m*0.1+b;++k;}
s=s/10;

}while(s!=0);
for(i=1;i<=k;++i)
m=m*10;

return m;

}

 

 

#include <stdio.h>
#include<stdlib.h>
long long func(long  s);
int main() {
	long s,t;
	printf("Enter a number:");
	while(scanf("%lld",&s)!=EOF){
	t=func(s);
	printf("new number is :%ld\n\n",t);
	printf("Enter a number:");}

    system("pause");
    return 0;
}
long long func(long  s){
int b,i,k=-1;
double   m=0;
do{
	b=s%10;
	if(b%2!=0)  {m=m*0.1+b;++k;}
	s=s/10;
	
}while(s!=0);
for(i=1;i<=k;++i)
		m=m*10;

return m;
	

}