Thread: What is the logic for this program

Dear All,
I was attended recently one interview in MNC company..they told me to explain the logic of following program and they provided output for me..it is the first time i am seeing this type of c program in my industry experience
program is follows

Code:

#include<stdio.h>
int main()
{
     int a, b, c;
     int count=1;
     for(b=c=10;a="-FIGURE?,UMKC,XYZHello Folks,TFy!QJu R0o TNn(R0o)SLq SLq ULo+ UHs UJq TNn*RPn/QPbEWS_JSWQAIJO^\
                   NBELPeHBFHT}TnALVlBLOFAkHFOuFETp\
                   HCStHAUFAgcEAelclcn^r^r\\tZvYxXy\
                   T|S~Pn SPm SOn TNn ULo0ULo#ULo-W\
                   Hq!WFs XDt!" [b+++21];)
                   for(;a-->64;)
                   putchar(++c=='Z'?c=c/9:33^b&1);
                   system("pause");
                   return 0;
                   }

It will give the output as INDIAN COUNTRY symbol..can anybody explain me what is the logic behind this program

It's like this:

Code:

#include <stdio.h>
main(t,_,a)char *a;{return!0<t?t<3?main(-79,-13,a+main(-87,1-_,
main(-86,0,a+1)+a)):1,t<_?main(t+1,_,a):3,main(-94,-27+t,a)&&t==2?_<13?
main(2,_+1,"&#37;s %d %d\n"):9:16:t<0?t<-72?main(_,t,
"@n'+,#'/*{}w+/w#cdnr/+,{}r/*de}+,/*{*+,/w{%+,/w#q#n+,/#{l,+,/n{n+,/+#n+,/#\
;#q#n+,/+k#;*+,/'r :'d*'3,}{w+K w'K:'+}e#';dq#'l \
q#'+d'K#!/+k#;q#'r}eKK#}w'r}eKK{nl]'/#;#q#n'){)#}w'){){nl]'/+#n';d}rw' i;# \
){nl]!/n{n#'; r{#w'r nc{nl]'/#{l,+'K {rw' iK{;[{nl]'/w#q#n'wk nw' \
iwk{KK{nl]!/w{%'l##w#' i; :{nl]'/*{q#'ld;r'}{nlwb!/*de}'c \
;;{nl'-{}rw]'/+,}##'*}#nc,',#nw]'/+kd'+e}+;#'rdq#w! nr'/ ') }+}{rl#'{n' ')# \
}'+}##(!!/")
:t<-50?_==*a?putchar(31[a]):main(-65,_,a+1):main((*a=='/')+t,_,a+1)
  :0<t?main(2,2,"%s"):*a=='/'||main(0,main(-61,*a,
"!ek;dc i@bK'(q)-[w]*%n+r3#l,{}:\nuwloca-O;m .vpbks,fxntdCeghiry"),a+1);}

It seems to make no sense, but infact it prints out the song of 12 days of christmas. The logic is hidden so no one else or very few can manage to make sense of it

Btw the code you posted is not in it's entirety? Because it gives several warnings and doesn't print right.

This may help:

The process is known as obfuscated code.

http://en.wikipedia.org/wiki/Obfuscated_code