Basic data types include integer types, floating point types, character types, and Boolean types. Detailed introduction: 1. Integer type, used to store integer values, which can represent positive numbers, negative numbers and zero. Integer types in different programming languages may have different names and sizes; 2. Floating point type, used to store numbers with decimals Partial numerical values, floating point number types can represent non-integer values, including decimals, scientific notation, etc.; 3. Character types are used to store single characters, and character types in different programming languages may have different sizes and encoding methods; 4. Boolean Type etc.
The operating system for this tutorial: Windows 10 system, DELL G3 computer.
Basic data type is a data type in programming language, used to store basic data values. Each programming language may have different basic data types, but in general, common basic data types include integers, floating point numbers, characters, and Boolean values.
1. Integer type: The integer type is used to store integer values and can represent positive numbers, negative numbers and zero. Integer types in different programming languages may have different names and sizes. Common integer types are:
- int: represents a signed integer, usually 32 or 64 bits in size, depending on the computer architecture.
- short: Represents a signed short integer, usually 16 bits in size.
- long: Represents a signed long integer, usually 64 bits in size.
- byte: Represents signed byte, the size is 8 bits.
2. Floating point type: The floating point type is used to store values with decimal parts. The floating-point number type can represent non-integer values, including decimals, scientific notation, etc. Common floating point number types are:
- float: represents a single-precision floating point number with a size of 32 bits and can represent approximately 7 significant digits.
- double: Represents a double-precision floating point number with a size of 64 bits and can represent approximately 15 significant digits.
3. Character type: Character type is used to store a single character. Character types in different programming languages may have different sizes and encoding methods. Common character types are:
- char: represents a character, usually 16 bits in size, and uses Unicode encoding.
4. Boolean type: The Boolean type is used to store logical values and can only represent true or false. Common Boolean types are:
- bool: represents a Boolean value, usually 1 byte in size.
In addition to these common basic data types, some programming languages may also provide other specific basic data types, such as enumeration types, pointer types, etc. At the same time, some programming languages also support user-defined data types. In programming, it is very important to choose the appropriate data type, which will affect the performance and memory usage of the program. Therefore, when writing a program, you need to choose the appropriate basic data type to store and process data according to actual needs.
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