C++ How to Program, Sixth Edition

Appendix C. Fundamental Types

Figure C.1 lists C++’s fundamental types. The C++ Standard Document does not provide the exact number of bytes required to store variables of these types in memory. However, the C++ Standard Document does indicate how the memory requirements for fundamental types relate to one another. By order of increasing memory requirements, the signed integer types are signed char, short int, int and long int. This means that a short int must provide at least as much storage as a signed char; an int must provide at least as much storage as a short int; and a long int must provide at least as much storage as an int. Each signed integer type has a corresponding unsigned integer type that has the same memory requirements. Unsigned ...