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¸ÕѧC£¬ÓÃCʵÏÖ±àÂë - C/C++ / CÓïÑÔ

#include"stdio.h"
#include"stdlib.h"
void ContrTwo(char i)
{
char str1[8];
itoa(i,str1,2);
printf("%s",str1);
}
unsigned char leftRot(char str,int i);
unsigned char DEVC(char str,char g);
unsigned char mAdd(char str,char r);
void main()
{
char Pstr,Scma,R,TerMa;
printf("Ñ­»·±àÂë\n");
printf("ÇëÊäÈëÐÅÏ¢Âëm(x)£º");
scanf("%c",&Pstr);
printf("\nÇëÊäÈëÉú³ÉÂë×Ög(x)£º");
scanf("%c",&Scma);
Pstr=leftRot(Pstr,4);
R=DEVC(Pstr,Scma);
TerMa=mAdd(Pstr,R);
ContrTwo(TerMa);
}
unsigned char leftRot(char str,int i)//Ïò×óÒÆËÄλ
{
str=str<<i;
return str;
}
unsigned char DEVC(char str,char g)//µÃµ½¼à¶½Óàʽ
{
int i;
for(i=4;i>=2;i--)
{
g=leftRot(g,i);
str=str^g;
}
return str;
}
unsigned char mAdd(char str,char r)//µÃµ½±àÂë
{
char c;
c=leftRot(str,4);
c=str^r;
return c;
}
--------------------
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  £²¡¢ÓÃxrm(x)=x4(x2+x)=x6+x5³ýÒÔg(x),
  Èçͼ(a)Ëùʾ,µÃµ½¼à¶½Óàʽr(x)=x2+1¡£
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C ³ÌÐòÎÊÌâ (¶þ) - C/C++ / CÓïÑÔ

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#include <stdio.h>
int main()
{
  char x, y, z;
  int i;
  int a[16];
  for(i=0; i<=16; i++)
  {
  a[i] = 0;
  ......

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  struct hostent *hp; 
char AlarmDevIP[20];  
  int x2;

hp = gethostbyname("www.google.com");
if (hp)
{ ......

C ³ÌÐòÎÊÌâ (Èý) - C/C++ / CÓïÑÔ

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struct BBB
{
long num£»
char *name;
short int data;
char ha;
short ba[5];
}*p;
p=0x1000000;
p+0x200=____;
(Ulong)p+0x200=____;
(char*)p+0x200=____;
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