3. Arrays and memory #

Created Tuesday 12 November 2019

• Zero Indexing is preferred, coz it decreases an operation on the CPU(Really)
• Hence index is the same as “distance from the first element”.
• Address = root addrress + (size_of_datatype)*index
• Except for strings, couting arr_name returns the root address. For a char array, it looks for a ‘\0’ and hence prints the string.

You were right, there’s no way that we pass an array as arg without it’s size. We need to explictly pass the size, as the head is merely a pointer.

• When we write paramaters, we write (data_type name[]), although data_type* name would have worked too.
• But when we call the function, we pass only the array name.