Data Structure Arrays Question:

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Tell me do array subscripts always start with zero?

Arrays Interview Question
Arrays Interview Question

Answer:

Yes. If you have an array a[MAX] (in which MAX is some value known at compile time), the first element is a[0], and the last element is a[MAX-1]. This arrangement is different from what you would find in some other languages. In some languages, such as some versions of BASIC, the elements would be a[1] through a[MAX], and in other languages, such as Pascal, you can have it either way.

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What will be output if you will execute following c code?
#include<stdio.h>
void main(){
long double a;
signed char b;
int arr[sizeof(!a+b)];
printf("%d",sizeof(arr))
}		Explain is it valid to address one element beyond the end of an array?