C语言有哪些有意思的编程题？

#define r® R"()"
/[/#include //<stdio.h>
#include<math.h>/!![crc=0f527cd2]/
float I,bu,k,i,F,u,U,K,O;char o[5200];int
#define R(U) (sizeof(‘U’)==1||sizeof(U"1"[0])==1)
h=0,t=-1,m=80,n=26,d,g,p=0,q=0,v=0,y=112,x=40; float
N(float/x/){g=1<<30;d=-~d1103515245&–g;return d
/g;}void//w(int//){if(t<0){for(g=0;g<5200;o[g++ ]=
0);for(;g;o[g+79]=10)g-=80;for(t=37;g<62;o[80+g++]=32) ;
}if(m&&o[h80+m-1]==10){for(g=0;g<79;o[t80+g++]=0){}o[t
++80+g]=10;t%=64;n+=2;I=N(70)+5;if(n>30&&(I-x)(I-x)+n*
n>1600&&R()){O=0;F=(x=0x1!=sizeof(’ '))?k=1+N(2),i=12-k+N(
8),N(4):(k=17+N(5),i=0,r()[0]?O=.1: 0);for(u=U=-.05;u<32;
U=k+i+i*.5sin((u+=.05)+F))for( K=0 ;K< U;K+=.1)if((bu=K
sin(u/5),g=I+cos( u/5) K)>=0&&g < 79 )o[g+(int)(t+44+
bu(.5-(bu>0?3O: O) ) )%64 80 ] =32;x*=02//* /2
-1;n=O+x?n=I+(x?0 :N (k)- k /2),g=(t+42 )%
64,m=-~g%64,x?g=m =-~ m%64:0 ,n>5?o[g80 +
n-3]=o[m80+n-3]= 0: 0 ,n <75?o[g80+n
+2]=o[m80+n+2]=0 :0:0; x=I;}h=-~h%64
;m=0;}putchar((g=o [h 80+m++])?g:);
if(g){w();}}void W (const char*
){for(;_;w(_++));} int main(int a
,char){while(a–)d +=[a ]-(char*)0;W(
“#include<stdio.h>typed” “e” “f\40int\40O;v”
“oid o(O ){putchar();}O” “\40main(){O” “”
“[512],**p=,**d,b,q;for(b=0;b" “++<512;p=+q)[q”
“=(p-_+1)9%512]=(O)p;”) ; for(;(g= getchar())-EOF;p=
q){q=p;for(v=512;p-q-g&&q-p- g; v–)q=-~q9%512
;W(“o(”);if(p>q)w(y),w(45);w( 40);w(y^=20
);w(075);for(a=0;a<v;a++)w(42); for(W(”(O**"
);a–;w(42)){}w(41);w(y^024);w( 41);if(p<=q)w(
45),w(y^20);W(");");}for(a=7;a-6 ;W(a<6?"{;}":""
))for(a =0;a <6 && !o[h*80+m +a];a++){}W(“r”
“etu” /J / “rn+0;}\n” );return
/ "#/0 ;}