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 problem is not about pointer size but pointer dereferencing. (wether in C or C++)

Say you have:

int* someint;
float* somefloat;

*someint references a memory size of sizeof(int), whereas *somefloat references a memory size of sizeof(float) which are different.