How to determine the position of ascii values not using bit char code, as it is made in a code made by a sololearn coder?

Question

C
https://code.sololearn.com/c1gEbmu5BQ4T/?ref=app

Answer 1

0 and 1 in the code is just used to determine the space and the ascii character which is given by rand, you can actually use any value in the array, its just the output that matters, the logo is already been drawn in the array, you can decide to just print it out, but @maze want it to be unique i presume thats why he use random characters

Answer 2

I thought using applied function to sizeof() but i have little knowledge (just an idea).