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 本帖最后由 青蛙星 于 2015-5-31 09:29 编辑  
 
跟大家分享一下有趣的东西,记得别哭。hello world的N种写法。 
第一个  
-         #define _________ }
 
 -     #define ________ putchar
 
 -     #define _______ int main
 
 -     #define _(a) ________(a);
 
 -     #define ______ _______(){
 
 -     #define __ ______ _(0x48)_(0x65)_(0x6C)_(0x6C)
 
 -     #define ___ _(0x6F)_(0x2C)_(0x20)_(0x77)_(0x6F)
 
 -     #define ____ _(0x72)_(0x6C)_(0x64)_(0x21)
 
 -     #define _____ __ ___ ____ _________
 
 -     #include<stdio.h>
 
 -     _____
 
  复制代码 
第二个 
- #include<stdio.h>
 
 -     int main(){
 
 -       int x=0,y[14],*z=y;*(z++)=0x48;*(z++)=y[x++]+0x1D;
 
 -       *(z++)=y[x++]+0x07;*(z++)=y[x++]+0x00;*(z++)=y[x++]+0x03;
 
 -       *(z++)=y[x++]-0x43;*(z++)=y[x++]-0x0C;*(z++)=y[x++]+0x57;
 
 -       *(z++)=y[x++]-0x08;*(z++)=y[x++]+0x03;*(z++)=y[x++]-0x06;
 
 -       *(z++)=y[x++]-0x08;*(z++)=y[x++]-0x43;*(z++)=y[x]-0x21;
 
 -       x=*(--z);while(y[x]!=NULL)putchar(y[x++]);
 
 -     }
 
  复制代码 
第五个 
- #include<stdio.h>
 
 - int main(){int i,n[]={(((1<<1)<<(1<<1)<<(1<<
 
 -     1)<<(1<<(1>>1)))+((1<<1)<<(1<<1))), (((1
 
 -     <<1)<<(1<<1)<<(1<<1)<<(1<<1))-((1<<1)<<(
 
 -     1<<1)<<(1<<1))+((1<<1)<<(1<<(1>>1)))+ (1
 
 -     <<(1>>1))),(((1<<1)<<(1<<1)<<(1<<1)<< (1
 
 -     <<1))-((1<<1)<<(1<<1)<<(1<<(1>>1)))- ((1
 
 -     <<1)<<(1<<(1>>1)))),(((1<<1)<<(1<<1)<<(1
 
 -     <<1)<<(1<<1))-((1<<1)<<(1<<1)<<(1<<(1>>1
 
 -     )))-((1<<1)<<(1<<(1>>1)))),(((1<<1)<< (1
 
 -     <<1)<<(1<<1)<<(1<<1))-((1<<1)<<(1<<1)<<(
 
 -     1<<(1>>1)))-(1<<(1>>1))),(((1<<1)<<(1<<1
 
 -     )<<(1<<1))+((1<<1)<<(1<<1)<<(1<<(1>>1)))
 
 -     -((1<<1)<<(1<<(1>>1)))),((1<<1)<< (1<<1)
 
 -     <<(1<<1)),(((1<<1)<<(1<<1)<<(1<<1)<<(1<<
 
 -     1))-((1<<1)<<(1<<1))-(1<<(1>>1))),(((1<<
 
 -     1)<<(1<<1)<<(1<<1)<<(1<<1))-((1<<1)<< (1
 
 -     <<1)<<(1<<(1>>1)))-(1<<(1>>1))), (((1<<1
 
 -     )<<(1<<1)<<(1<<1)<<(1<<1))- ((1<<1)<< (1
 
 -     <<1)<<(1<<(1>>1)))+(1<<1)), (((1<<1)<< (
 
 -     1<<1)<<(1<<1)<< (1<<1))-((1<<1)<< (1<<1)
 
 -     <<(1<<(1>>1)))-((1<<1) <<(1<< (1>>1)))),
 
 -     (((1<<1)<< (1<<1)<<(1<<1)<< (1<<1))- ((1
 
 -     <<1)<<(1<<1)<<(1<<1))+((1<<1)<< (1<<(1>>
 
 -     1)))), (((1<<1)<<(1<<1) <<(1<<1))+(1<<(1
 
 -     >>1))),(((1<<1)<<(1<<1))+((1<<1)<< (1<<(
 
 -     1>>1))) + (1<< (1>>1)))}; for(i=(1>>1);i
 
 -     <(((1<<1) <<(1<<1))+((1 <<1)<< (1<<(1>>1
 
 -     ))) + (1<<1)); i++) printf("%c",n[i]); }
 
  复制代码 
第六个 
-     #include <stdio.h>
 
 -     #define _(_) putchar(_);
 
 -     int main(void){int i = 0;_(
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++i)_(++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++i)_(++++++++++++++
 
 -     i)_(--++i)_(++++++i)_(------
 
 -     ----------------------------
 
 -     ----------------------------
 
 -     ----------------------------
 
 -     ----------------------------
 
 -     ----------------i)_(--------
 
 -     ----------------i)_(++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++++
 
 -     ++++++++++++++++++++++++++i)
 
 -     _(----------------i)_(++++++
 
 -     i)_(------------i)_(--------
 
 -     --------i)_(----------------
 
 -     ----------------------------
 
 -     ----------------------------
 
 -     ----------------------------
 
 -     ----------------------------
 
 -     ------i)_(------------------
 
 -     ----------------------------
 
 -     i)return i;        }
 
  复制代码 
第三个    #include<stdio.h> 
    #define __(a) goto a; 
    #define ___(a) putchar(a); 
    #define _(a,b) ___(a) __(b); 
    int main() 
    { _:__(t)a:_('r',g)b:_('$',p) 
      c:_('l',f)d:_(' ',s)e:_('a',s) 
      f:_('o',q)g:_('l',h)h:_('d',n) 
      i:_('e',w)j:_('e',x)k:_('\n',z) 
      l:_('H',l)m:_('X',i)n:_('!',k) 
      o:_('z',q)p:_('q',b)q:_(',',d) 
      r:_('i',l)s:_('w',v)t:_('H',j) 
      u:_('a',a)v:_('o',a)w:_(')',k) 
      x:_('l',c)y:_('\t',g)z:___(0x0)} 
 
第四个 
- #include <stdio.h>
 
 - int n[]={0x48,
 
 -     0x65,0x6C,0x6C,
 
 -     0x6F,0x2C,0x20,
 
 -     0x77,0x6F,0x72,
 
 -     0x6C,0x64,0x21,
 
 -     0x0A,0x00},*m=n;
 
 -     int main(int* n){putchar
 
 -     (*m)!='\0'?main
 
 -     (m++):0;}
 
  复制代码 
 
 
 
 
 
在VS2010下实测有效。 
转自:http://coolshell.cn/articles/914.html 
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一位网友的讲解 
第一个:利用了宏的层层替代,剥离开来就是一个标准的 main(){putchar(‘H’);……putchar(‘!’);} 
第二个:利用数组和指针,先对赋值Y[0]=0x48=’H’,Y[1]=Y[0]+0x1D=0x65=’e’依次通过偏移量对数组赋值,组后逐个输出。 
第三个:利用goto语言跳转输出。从 __(t)开始,即goto t;t:_(‘H’,j) 即(putchar(‘H’, goto (j)) 依次跳转输出。 
第四个:利用函数副作用和条件运算符判断输出。n是数组首地址。m是指针变量,每次自增,最后函数返回数组首地址。 
第五个:利用移位(结核性:L-R)对数组赋值:如第一个值((1<<1)<<(1<<1)<<(1<<1)<<(1<>1)))+((1<<1)<<(1<<1))),即((2<<2<<2<<1) + (2<<2))即(8<<2<<1 + 8)= 64<<1 + 8 = 64 + 8 = 72 = 0x48 ='H'. 
 
 
 
 
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