© Mikael Olsson 2018
Mikael OlssonC++17 Quick Syntax Referencehttps://doi.org/10.1007/978-1-4842-3600-0_3

3. Variables

Mikael Olsson1 
(1)
Hammarland, Finland
 

Variables are used for storing data in memory during program execution.

Data Types

Depending on the type of data you need to store, there are several kinds of built-in data types. These are often called fundamental data types or primitives. The integer (whole number) types are short, int , long, and long long. The float, double, and long double types are floating-point (real number) types. The char type holds a single character and the bool type contains either a true or false value.

Data Type

Size (Byte)

Description

char

1

Integer or character

short

2

 

int

4

Integer

long

4 or 8

 

long long

8

 

float

4

 

double ...

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