not a big deal

what would be the output of the following code statement

main(_){for(--_;putchar(_++["J!Mpwf!Zpv\1"]-1););}

think, think.....

Well the output is "I Love You" :-)

How?? It goes as follows: firstly the underscore in the main is a variable equivalent to argc but I cant understand thet why the code doesn't give warning in the main, beacuse either ir should have both the arguments of main in it or none of them....anyways since we run the program by the command ./a.out the argc value is 1 and hence '_' is initialized to 1
going further in the for loop the variable _ gets its inital value 0. Now there is something important to understand... a[i]=*(a+i)=*(i+a)=i[a] thus in C it doesn't matter that what is the base and waht is the subscript.... thus the *thing* inside the putchar can be understood as arbitString[_++]-1 which goes on printing the the elements of the string -1 which comes out to I Love You and stops when the string ends.... simple... isn't it.