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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。
hello1.c
01 #define _________ }
02 #define ________ putchar
03 #define _______ main
04 #define _(a) ________(a);
05 #define ______ _______(){
06 #define __ ______ _(0x48)_(0x65)_(0x6C)_(0x6C)
07 #define ___ _(0x6F)_(0x2C)_(0x20)_(0x77)_(0x6F)
08 #define ____ _(0x72)_(0x6C)_(0x64)_(0x21)
09 #define _____ __ ___ ____ _________
10 #include<stdio.h>
11 _____
hello2.c
1 #include<stdio.h>
2 main(){
3 int x=0,y[14],*z=&y;*(z++)=0x48;*(z++)=y[x++]+0x1D;
4 *(z++)=y[x++]+0x07;*(z++)=y[x++]+0x00;*(z++)=y[x++]+0x03;
5 *(z++)=y[x++]-0x43;*(z++)=y[x++]-0x0C;*(z++)=y[x++]+0x57;
6 *(z++)=y[x++]-0x08;*(z++)=y[x++]+0x03;*(z++)=y[x++]-0x06;
7 *(z++)=y[x++]-0x08;*(z++)=y[x++]-0x43;*(z++)=y[x]-0x21;
8 x=*(--z);while(y[x]!=NULL)putchar(y[x++]);
9 }
hello3.c
01 #include<stdio.h>
02 #define __(a) goto a;
03 #define ___(a) putchar(a);
04 #define _(a,b) ___(a) __(b);
05 main()
06 { _:__(t)a:_('r',g)b:_('$',p)
07 c:_('l',f)d:_(' ',s)e:_('a',s)
08 f:_('o',q)g:_('l',h)h:_('d',n)
09 i:_('e',w)j:_('e',x)k:_('\n',z)
10 l:_('H',l)m:_('X',i)n:_('!',k)
11 o:_('z',q)p:_('q',b)q:_(',',d)
12 r:_('i',l)s:_('w',v)t:_('H',j)
13 u:_('a',a)v:_('o',a)w:_(')',k)
14 x:_('l',c)y:_('\t',g)z:___(0x0)}
hello4.c
1 int n[]={0x48,
2 0x65,0x6C,0x6C,
3 0x6F,0x2C,0x20,
4 0x77,0x6F,0x72,
5 0x6C,0x64,0x21,
6 0x0A,0x00},*m=n;
7 main(n){putchar
8 (*m)!='\0'?main
9 (m++):exit(n++);}
hello5.c
01 main(){int i,n[]={(((1<<1)<<(1<<1)<<(1<<
02 1)<<(1<<(1>>1)))+((1<<1)<<(1<<1))), (((1
03 <<1)<<(1<<1)<<(1<<1)<<(1<<1))-((1<<1)<<(
04 1<<1)<<(1<<1))+((1<<1)<<(1<<(1>>1)))+ (1
05 <<(1>>1))),(((1<<1)<<(1<<1)<<(1<<1)<< (1
06 <<1))-((1<<1)<<(1<<1)<<(1<<(1>>1)))- ((1
07 <<1)<<(1<<(1>>1)))),(((1<<1)<<(1<<1)<<(1
08 <<1)<<(1<<1))-((1<<1)<<(1<<1)<<(1<<(1>>1
09 )))-((1<<1)<<(1<<(1>>1)))),(((1<<1)<< (1
10 <<1)<<(1<<1)<<(1<<1))-((1<<1)<<(1<<1)<<(
11 1<<(1>>1)))-(1<<(1>>1))),(((1<<1)<<(1<<1
12 )<<(1<<1))+((1<<1)<<(1<<1)<<(1<<(1>>1)))
13 -((1<<1)<<(1<<(1>>1)))),((1<<1)<< (1<<1)
14 <<(1<<1)),(((1<<1)<<(1<<1)<<(1<<1)<<(1<<
15 1))-((1<<1)<<(1<<1))-(1<<(1>>1))),(((1<<
16 1)<<(1<<1)<<(1<<1)<<(1<<1))-((1<<1)<< (1
17 <<1)<<(1<<(1>>1)))-(1<<(1>>1))), (((1<<1
18 )<<(1<<1)<<(1<<1)<<(1<<1))- ((1<<1)<< (1
19 <<1)<<(1<<(1>>1)))+(1<<1)), (((1<<1)<< (
20 1<<1)<<(1<<1)<< (1<<1))-((1<<1)<< (1<<1)
21 <<(1<<(1>>1)))-((1<<1) <<(1<< (1>>1)))),
22 (((1<<1)<< (1<<1)<<(1<<1)<< (1<<1))- ((1
23 <<1)<<(1<<1)<<(1<<1))+((1<<1)<< (1<<(1>>
24 1)))), (((1<<1)<<(1<<1) <<(1<<1))+(1<<(1
25 >>1))),(((1<<1)<<(1<<1))+((1<<1)<< (1<<(
26 1>>1))) + (1<< (1>>1)))}; for(i=(1>>1);i
27 <(((1<<1) <<(1<<1))+((1 <<1)<< (1<<(1>>1
28 ))) + (1<<1)); i++) printf("%c",n[i]); }
hello6.cpp
下面的程序只能由C++的编译器编译（比如：g++）
01 #include <stdio.h>
02 #define _(_) putchar(_);
03 int main(void){int i = 0;_(
04 ++++++++++++++++++++++++++++
05 ++++++++++++++++++++++++++++
06 ++++++++++++++++++++++++++++
07 ++++++++++++++++++++++++++++
08 ++++++++++++++++++++++++++++
09 ++++i)_(++++++++++++++++++++
10 ++++++++++++++++++++++++++++
11 ++++++++++i)_(++++++++++++++
12 i)_(--++i)_(++++++i)_(------
13 ----------------------------
14 ----------------------------
15 ----------------------------
16 ----------------------------
17 ----------------i)_(--------
18 ----------------i)_(++++++++
19 ++++++++++++++++++++++++++++
20 ++++++++++++++++++++++++++++
21 ++++++++++++++++++++++++++++
22 ++++++++++++++++++++++++++++
23 ++++++++++++++++++++++++++++
24 ++++++++++++++++++++++++++i)
25 _(----------------i)_(++++++
26 i)_(------------i)_(--------
27 --------i)_(----------------
28 ----------------------------
29 ----------------------------
30 ----------------------------
31 ----------------------------
32 ------i)_(------------------
33 ----------------------------
34 i)return i;}
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