Why is the first element in an array always 0? -

Why is the first element in an array always 0? -

i'm wondering thought of first element in array beingness 0 came from. why not 1? i've gotten used fact zero, cannot come reason first element zero.

an array block of sequential memory. if origin of array @ memory address x, first element @ address x+0, sec @ x+sizeof(arraytype), 3rd @ x+2*sizeof(arraytype), etc.

arrays