How do you access a function/class in the Standard Library?

As a good rule of thumb, how should you gain input from the user?

Convert n into its numerical value given:
#include <iostream>
#include <string> // Allows for use of strings
std::string n;
int num;
std::cout<<"Enter a #"<< std::endl;
std::getline(std::cin, n);

How do you get the size of a type & what will it be measured in?

Void is an incomplete type, as a result what may be disallowed?

What are the differences between signed & unsigned types?

How would you resize an int?

what is the range of values an int (__int32) may hold?

List the floating point types from least to most accurate:

What is the size of int, long & pointer in 32-bit Systems?

What is the size of int, long & pointer in 64-bit Systems?