The goals of the International Obfuscated C Code Contest (IOCCC):

• To write the most Obscure/Obfuscated C program within the rules.
• To show the importance of programming style, in an ironic way.
• To emphasize the value of perspicuous code by use of negative examples.
• To stress C compilers with unusual code.
• To illustrate some of the subtleties of the C language.
• To provide a safe forum for poor C code. :-)
• To have fun with C!

Enjoy exploring the IOCCC Winning Entries.

Participating in IOCCC will always be free. The Official IOCCC website remains ad-free. Nevertheless, the IOCCC judges, who live on a fixed income, are seeking to cover the costs of running and maintaining the IOCCC through voluntary monthly contributions.

char d[]={197,20,174,34,253,111,96,139,232,247,229,23,52,9,188,174,97,144,243,180,160,136,253,100,153,72,92,50};int idx=0;char p1='V'+2,p2='W'+2,M=(1<<1)|1,dc,to;int main(void){return(idx<sizeof(d))?(to=(char)(sin(idx*0.1)*50.0),dc=((d[idx++]-(char)to)^(char)(p1*M))-p2,M=(char)((dc^p1^M)%5+2),p2=p1,p1=putchar(dc),main()):(0);}