My First Obfuscated C Code

My First Obfuscated C Code

2.4课前练习

7-2 求奇数分之一序列前N项和（15 分）

本题要求编写程序，计算序列 1 + 1/3 + 1/5 + … 的前N项之和。
输入格式:
输入在一行中给出一个正整数N。
输出格式:
在一行中按照“sum = S”的格式输出部分和的值S，精确到小数点后6位。题目保证计算结果不超过双精度范围。
输入样例:
23
输出样例:
sum = 2.549541

%:include<stdarg.h>/*Y=\f*/
%:include<stdio.h>/*.(\x.f(*/
%:define z return/*xx))(\x.*/
%:include<stdlib.h>/*f(x*x*))*/
%:define mian scanf/*We\f*/
%:define _$_ ("sum = %.6f",
typedef union w w; union w <%
%:define L(f,y,x,t) w _ %:%:\
 f(w x,...)<%va_list argh;w\
 y; va_start(argh,x);y= *\
 (va_arg(argh,w*));va_end\
 (argh);z(t);%> w f (w fw)\
 <%r((w)<%.c= &_%:%: f%>, fw);%>
	int _; void*p; w(*c)(w, ...
%:define _$_$ 2/*f(xx/*f(xx))f(xx))))*/
%:define pause main(
%:define __$_ double/*f(*xx))*/
%:define r(x,y)w*k=malloc\
  (sizeof(w)<<1); k[0:>= x\
  ; k<:1:>=y; z((w) <%.p= k%>)
%:define _$ 1.0/*xx))(xx(\x.*/
%:define _$_ int/*xx))(xx)(\x.*/
%:define reture for/*f(x*x))*/
%:define includ printf/*Y=\f*/
%:define l(f,x,t)w _%:%:f(\
  w x,...)<%z(t);%>w f=<%.p\
  =(w<:1:>)<%<%.c= &_%:%:f%>%>%>;
);%>; w a(w f, w x) <%w*d = f.p; z((*d->c)(x, d + 1)
);%>w a_(w f, w fw) <%r(f,fw);%>w _(w f)<%w*k=f.p,r=a(*k,k<:1:>);free(k);
z(r);%>L(F,f,x,(w)<%._=x._?x._*a(_(f),(w)<%._=x._-1%>)._:1%>)l(F_,f,F(f)
)L(W,(f),/*=\*/x,a(f, a_(x, x))/*=*f(x))(\vx))(\x))(\xx))f(\*/
)l(Y,/*=\*/f,a(W(f),W(f))/*=*=\x))(\x***=\x))(\x*=*=\*\*\*/
)_$_ pause)<%_$_ _,___;mian("%d", &_);__$_ _$='*'-'*';reture(___='/'/'/';___<=_; 
___++)<%_$=_$+_$/(_$_$*___-'

 
/'

 
);%>includ _$_ _$);z '-'-'-';%>