The C++ compiler manipulates built-in types in your programs. Data type representation is machine specific in C++, but Table 2.1 lists typical sizes.
|Built-in Type||16-Bit Word Size||32-Bit Word Size||64-Bit Word Size|
|long double (signed)||64||128||128|
Integer formats (one's complement or two's complement) and extended precision formats are machine dependent and have different representations. Built-in ...