Variables: Basic Data Types

Variables: Basic Data Types

Applies To: C++Builder 1 or higher
Category: C++ Language

C++ defines seven basic data types. They can be used when declaring a variable's type:

char: character (-127 to 127)

int: integer (-32767 to 32767)

float: single-precision floating point (6 digits range precision)

double: double-precision floating point (10 digits range precision)

bool: boolean (true or false)

wchat_t: wide-character (0 to 65535)

void: no value

There are several data types modifiers that can precede the previously listed data types:

long

short

signed

unsigned

If a modifier is used but no data type is specified, the compiler assumes that it is an int. For example, unsigned int x; and unsigned x; are equivalent. It is not necessary to make an integer variable signed because integer variables are signed by default.