Thread: Guess the code!

The below two programs are based on a common theme.

Code:

unsigned i, j;
for(i = 64; i; --i) {
    for(j = 0; j < 64; ++j)
        putchar("-#"[!(i - 1 & j)]);
    putchar('\n'); }

This one is completely incomprehensible. The program is summarized in a one-word C-style comment which makes the last line exactly 80 characters long ("10-letters" is a placeholder); you can try guessing it instead

Code:

int main(){char*c=calloc(102,1);++c;*c+=8;while(*c){--*c;--c;*c+=4;c+=2;*c+=4;++
c;++*c;c-=2;}c+=2;*c+=2;++c;*c+=2;c-=4;while(*c){--*c;while(*c){--*c;++c;++*c;--
c;}++c;while(*c)--*c,++c,putchar(*c),c-=2,++*c,++c;c+=3;while(*c){--*c;while(*c)
--*c,++c,++*c,--c;++*c;++c;while(*c){--c;++*c;++c;*c+=7;while(*c)--*c,++c,*c+=6,
--c;++c;--*c;putchar(*c);--*c;while(*c)--*c,--c,*c+=2,++c;--c;putchar(*c);while(
*c){--*c;}}*c+=2;--c;while(*c)--*c,++c,--*c,--c;*c+=2;++c;while(*c){--c;--*c;++c
;*c+=7;while(*c)--*c,++c,*c+=4,--c;++c;putchar(*c);putchar(*c);while(*c)--*c;--c
;}c+=2;}++*c;c-=3;while(*c){--*c;while(*c){--*c;++c;++*c;--c;}++*c;++c;while(*c)
{--*c;--c;++*c;c+=3;--*c;while(*c)--*c,++c,++*c,--c;*c+=2;++c;while(*c)--*c,--c,
--*c,++c;c-=3;}c-=4;}c+=2;putchar(*c);c-=3;}getchar();return 0;}/* 10-letters */

It makes several nonportable assumptions: unsigned default char or two's complement, ASCII, and general reliability of memory alloc. It is, however, written in a small number of simple, easy-to-understand operations, thus increasing its accessibility to beginning programmers.