This block of code doesnt make sense!!

[TadaTensai]

for( i=1,d=c; i && *c; c++ )
   i+=*c=='[', i-=*c==']';
if(!i) {
   c[-1]=0;
   while(a[p])
   {
      interpret(d);
   }
   c[-1]=']';
   break;
}

This is C code for an interpreter for the Brainf*** language, and [ is the beginning of the looping structure. I am making a superset to the language, called TripleHack, but I NEED to understand this looping structure. I can't figure out what this does! The code is in the middle of the interpret function. I took out all the unnecessary stuff.

Thank you


It is said that the only language all programmers understand is profanity.