Why is this array having all remaining values initialized to zero?

Question

Hello I am a beginner in C programming language, recently i started learning arrays, I have studied that by default all values in an int ar

Answer 1

from the C standard as cited here (hit the link, you can find some more useful info there)

If there are fewer initializers in a brace-enclosed list than there are elements or members of an aggregate, or fewer characters in a string literal used to initialize an array of known size than there are elements in the array, the remainder of the aggregate shall be initialized implicitly the same as objects that have static storage duration.