求整数的质因数分解(有数组).c.txt

求整数的质因数分解(采用了数组).c.rar 可以求出整数的质因数

#include<stdio.h>
#include<conio.h>
#include<string.h>
#define  Maxtimes  4
char Date[]={"2006.5.20"};

int zhg_entrance(char mima[],char prompt[])
{
  char password[21];           // 由此可以更改允许用户输入的密码位数，实际密码位数应当在数组mima[]赋值处更改
  extern char Date[];     // 声明外部变量
  int i,j; 
  zhg_information(Date);       // 外部变量Date[]已经在主调函数外赋过值        //  zhg_information有清屏功能
  printf("\n\t\t\t  ");
  printf("Welcom to use this program !\n\n\n");     
  printf("\tYou are given %d times to login at most.\n",Maxtimes);     // 欲更改次数可在本程序首预处理命令处进行
  printf("\t\t\t\t\t\t     For PROMPT,press <Ctrl+P>.\n");
  printf("\t\t\t\t\t\t     For EXIT,press <Ctrl+E>.\n\n\n\n\n");
  printf("\t   Please input the password:   ");
  shurumima1:  i=0;
  do
  {
    password[i]=getch();
    if(password[i]=='\b')
    {
      putchar('\b');
      i--;
    }
    else
    {
      printf("\a*");
      i++;
    }
  }
  while(password[i-1]!='\r'&&password[i-1]!='\x10'&&password[i-1]!='\x05');
  {
    if(password[i-1]=='\x10')          // <Ctrl+P>键
    {
      zhg_information(Date);
      printf("\n\n\n\n\t\t\tPROMPT:%s\n\n\n\n\n\n\t\tContinue :  ",prompt);
      goto shurumima1;
    }  
    if(password[i-1]=='\x05')           //  <Ctrl+E>键
      return 0;     // 表示登录失败
    {
      password[i-1]='\0';
      if( strcmp(password,mima)==0 )
        return 1;           // 表示登录成功
    }
  }
  for(j=1;j<Maxtimes;j++)
  {
    zhg_information(Date);
    printf("\n\n\t\t\t\tPassword Error !\n");
    if(Maxtimes-j>1)
      printf("\n\t\t\t\t%d times left !\n",Maxtimes-j);
    else
      printf("\n\t\t\tFor the last time.Be careful !\n");
    printf("\t\t\t\t\t\t     For PROMPT,press <Ctrl+P>.\n");
    printf("\t\t\t\t\t\t     For EXIT,press <Ctrl+E>.\n\n\n\n");
    printf("\tPlease input the password again:   ");
    shurumima2:   i=0;
    do
    {
      password[i]=getch();
      if(password[i]=='\b')
      {
	putchar('\b');
	i--;
      }
      else
      {
	printf("\a*");
	i++;
      }
    }
    while(password[i-1]!='\r'&&password[i-1]!='\x10'&&password[i-1]!='\x05');
    {      
      if(password[i-1]=='\x10')          // <Ctrl+P>键
      {
        zhg_information(Date);
	printf("\n\n\n\n\t\t\tPROMPT:%s\n\n\n\n\n\n\t\tContinue :  ",prompt);
        goto shurumima2;
      }
      if(password[i-1]=='\x05')           //  <Ctrl+E>键
        return 0;
      {
        password[i-1]='\0';
        if( strcmp(password,mima)==0 )
          return 1; 
      }
      if(j==Maxtimes-1)    // 此条件比以上两个的“优先级别”低不能放在其前
      {
        zhg_information(Date);
	printf("\n\n\n\t\t      Sorry,you've tried for %d times.\n\n",Maxtimes);
	printf("\t\t\t  Welcom to use next time !\n\n\n\n\n");
	printf("\t\tPlease press any key to quit.   Thank you !");
        getch();
        return 0;
      }
    } 
  }
  return 1;    // 事实上程序运行不到这里，此处是为了避免编译的警告
}


void zhg_information(char Date[])       
{
  int i;
  clrscr();
  printf("\n\t\t\t   All  Rights  Reserved !!!\n");
  printf(" Wuhan University\t\t\t\t\t\t----Author: zhg\n");
  printf(" E-mail: [e-mail]%55s\n",Date);
  for(i=1;i<=80;i++)
    putchar('-');
  putchar('\n');
}
 
 
 
 

#include<math.h>
#define N 16
void main()
{
  int i,fan,b,n,k,r,a[N]={0};
char mima[]={"87343609"},prompt[]={"dianmi"};
 
fan=zhg_entrance(mima,prompt);
  if(fan==0)
    goto over;
  
  printf("Please input the number b(%%d) :\t");
  scanf("%d",&b);
  printf("b=%d",b);
  n=b;
  i=0;
  for(k=2;k<=sqrt(n);k++)
  {
    r=n/k;
    if(n%k==0)
    {
      n=r;
      a[i]=k;
      k--;
    }
    i++;
  }
  a[i]=n;
  i=0;
  xunhuan1:if(a[i]!=0)
  printf("\nb=%d",a[i]);
  else 
  {
    i++;
    goto xunhuan1;
  }
  xunhuan2: i++;
  if(a[i]!=0)
  printf("*%d",a[i]);
  if(i>15)
  goto over;
  goto xunhuan2;
  over:putchar('\n');
}