Why is the data type needed in pointer declarations?

Question

As far as I know about data types in C/C++, while declaring a variable, we need to declare its data type, which tells the compiler to reserve the number of bytes in the memo

Answer 1

The Data type is needed when dereferencing the pointer so it knows how much data it should read. For example dereferencing a char pointer should read the next byte from the adress it is pointing to while an int pointer should read 2 bytes.