下面的六个程序片段主要完成这些事情：

输出Hello, World

混乱C语言的源代码

下面的所有程序都可以在GCC下编译通过，只有最后一个需要动用C 的编译器g 才能编程通过。

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• hello1.c

#define _________ }
#define ________ putchar
#define _______ main
#define _(a) ________(a);
#define ______ _______(){
#define __ ______ _(0x48)_(0x65)_(0x6C)_(0x6C)
#define ___ _(0x6F)_(0x2C)_(0x20)_(0x77)_(0x6F)
#define ____ _(0x72)_(0x6C)_(0x64)_(0x21)
#define _____ __ ___ ____ _________
#include
_____

• hello2.c

#include
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  ]);
}

• hello3.c

#include
#define __(a) goto a;
#define ___(a) putchar(a);
#define _(a,b) ___(a) __(b);
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)
}

• hello4.c

int n[]={0x48,
0x65,0x6C,0x6C,
0x6F,0x2C,0x20,
0x77,0x6F,0x72,
0x6C,0x64,0x21,
0x0A,0x00},*m=n;
main(n){putchar
(*m)!='\0'?main
(m  ):exit(n  );}

• hello5.c

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]); }

• hello6.c

下面的程序只能由C 的编译器编译（比如：g ）

#include 
#define _(_) putchar(_);
int main(void){int i = 0;_(i)_(                    i)_(              
i)_(--  i)_(      i)_(------
----------------------------
----------------------------
----------------------------
----------------------------
----------------i)_(--------
----------------i)_(        i)
_(----------------i)_(      
i)_(------------i)_(--------
--------i)_(----------------
----------------------------
----------------------------
----------------------------
----------------------------
------i)_(------------------
----------------------------
i)return i;}

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