So far, we have only looked at integer type variables. You may also want to store character data, or real numbers. A list of C data types is given in the table below.

Type of Data	Name of Variable Type	Comment
Real numbers	float	A float variable is appropriate for most real numbers such as 3.5 or 2.667.
	double	Double allocates twice as much memory for the number as float. It is short for double precision. Variables of type double should be used when you need very precise results or are doing many calculations with a variable that involve numbers of different magnitudes.
Integer numbers	int	int is the default type for integer data such as 232, or -3. The amount of storage space allocated will depend on the compiler. Generally, int will have the same amount of storage as either short or long .
	short	The short data type is useful for small integers. The amount of space allocated is decided by the compiler. If the compiler allocates 16 bits, a short can store numbers from -32767 to 32768.
	long	The long type allocates twice as much storage as short. If the compiler allocates 32 bits for a long, the value can range over approximately +/- 2 billion.
Character data	char	The char type stores a single ASCII character. Characters are enclosed in single quotes. For example, 'a' or 'A' or '2'.
Boolean data	bool	Boolean data is either true or false. The bool data type is only available in C++.

We will now look at math operators.