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1)          goto
goto Ö»ÄÜÔÚÒ»¸öº¯ÊýÄÚÌø×ª¡£½¨ÒéÉÙÓã¬Ê¹µÃ³ÌÐòά»¤ÆðÀ´ÈÝÒ׳ö´í£»µ«ÊÇ£¬ÔÚÓжà¸öÑ­»·Çé¿öÏÂÌø×ª£¬ÓÐʱÓÃgoto¿ÉÒÔʹµÃÎÊÌâ±äµÃ¼òµ¥¡£
class A
{
public:
A(){}
~A(){}
};
              int main()
{
{
              A a;
              goto Label1;
}
Label1:
cout<<”end”<<endl;
return 0;
}    
 
2)          setjmp/longjmp
·Ç¾Ö²¿ÓòÌø×ª(nonlocal goto)£¬¿ÉÓÃÓÚÔÚ²»Í¬º¯ÊýÄÚÌø×ª£¬²½ÖèÈçÏ£º
l         include <setjmp.h>
l         jmp_buf JumpBuffer
//Ìø×ªµÄλÖýṹ
l         setjmp(JumpBuffer)
±£´æµ±Ç°µÄλÖ㬽«À´Ìø×ªµ½ÕâÀï
l         longjmp(JumpBuffer, ÕûÊý)
 
              jmp_buffer jmpbuf;
              void Func()
{
cout << “ get in “ <<endl;
A a;
longjmp(jmpbuf, 1);
cout << “ never get here “<<endl;
}
              int main()
{
cout << “ get in main “ <<endl
if( setjmp (jmpbuf ) == 0 )
{
cout<<”set lable”<<endl;
Func();
}
                    else
{
       cout<<” jmp to here”<<endl;
}
}


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ÈçºÎʹÓ÷ºÐÍÄ£擬virtual? (C/C++) (template)

ÍøÉÏÒ»µÀ½ðɽµÄÃæÊÔÌ⣺
http://topic.csdn.net/u/20100524/14/0eff992a-2849-4db6-bdaa-d4a200e79b7c.html
Çë·Ö±ðÓÃC++µÄÃæÏò¶ÔÏóºÍ·ºÐÍ»úÖÆ£¬±àдʵÏÖTemplate MethodģʽµÄʾÀý´úÂ룬²¢±È½ÏÁ½ÖÖ·½Ê½¸÷×ÔµÄÓÅȱµã¡£
ÓÃÐ麯ÊýʵÏÖTemplate MethodµÄ·½Ê½¾Í²»¶à˵ÁË¡£Ó÷ºÐ͵ķ½Ê½ÊµÏÖ¶à̬ÔÚATLÀïÃæÓдóÁ¿µÄÓõ½£¡
·ºÐ͵ ......

linux³£ÓÃcº¯Êý ÎļþȨÏÞ¿ØÖÆÆª

access£¨ÅжÏÊÇ·ñ¾ßÓдæÈ¡ÎļþµÄȨÏÞ£©
¡¡¡¡Ïà¹Øº¯Êý  stat£¬open£¬chmod£¬chown£¬setuid£¬setgid
¡¡¡¡±íÍ·Îļþ  #include<unistd.h>
¡¡¡¡¶¨Ò庯Êý  int access(const char * pathname,int mode);
¡¡¡¡º¯Êý˵Ã÷  access()»á¼ì²éÊÇ·ñ¿ÉÒÔ¶Á/дijһÒÑ´æÔÚµÄÎļþ¡£²ÎÊýmodeÓм¸ÖÖÇé¿ö×éºÏ£¬R_OK ......

Beautify your c/c++ source code

http://uncrustify.sourceforge.net/
Ident code, aligning on parens, assignments, etc
Align on '=' and variable definitions
Align structure initializers
Align #define stuff
Align backslash-newline stuff
Reformat comments (a little bit)
Fix inter-character spacing
Add or remove parens on return ......

[ת]C/C++µÄ64λÕûÐÍ

Technorati ±êÇ©: C++ Ô­ÎĵØÖ·£ºhttp://www.byvoid.com/blog/c-int64/ ÔÚC/C++ÖУ¬64ΪÕûÐÍÒ»Ö±ÊÇÒ»ÖÖûÓÐÈ·¶¨¹æ·¶µÄÊý¾ÝÀàÐÍ¡£ÏÖ½ñÖ÷Á÷µÄ±àÒëÆ÷ÖУ¬¶Ô64ΪÕûÐ͵ÄÖ§³ÖÒ²ÊDZê×¼²»Ò»£¬ÐÎ̬¸÷Òì¡£Ò»°ãÀ´Ëµ£¬64λÕûÐ͵͍Ò巽ʽÓÐlong longºÍ__int64Á½ÖÖ(VC»¹Ö§³Ö_int64)£¬¶øÊä³öµ½±ê×¼Êä³ö·½Ê½ÓÐprintf(¡°%lld¡±,a)£¬printf ......

strassen in c language.

#include<stdio.h>
#define N 8
void input(int n,int p[N][N])
{
 int i,j;
 for(i=0;i<n;i++)
 {
  printf("please input the %d line:\n",i+1);
  for(j=0;j<n;j++)
  {
  scanf("%d",&p[i][j]);
 }
}
 }
void output(int n,int p[N][N])
......
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