To understand the five types of basic data type constants, you need specific code examples
In computer programming, constants refer to values that are fixed in the program. Basic data type constants refer to the most basic data type constants used in programming languages. Common basic data types include integer types, floating point types, character types, Boolean types and null types. The following will introduce these five basic data type constants in detail and provide specific code examples.
Code example:
int num1 = 100; // 整数类型常量 long num2 = 10000000000L; // 长整数类型常量 short num3 = -10; // 短整数类型常量
Code example:
float num1 = 3.14f; // 单精度浮点数类型常量 double num2 = 3.1415926; // 双精度浮点数类型常量
Code example:
char ch1 = 'A'; // 字符类型常量 char ch2 = '中'; // 字符类型常量(表示中文字符)
Code example:
boolean bool1 = true; // 布尔类型常量 boolean bool2 = false; // 布尔类型常量
Code sample:
String str = null; // 空类型常量
Through the above code sample, we can better understand the five types of basic data type constants. No matter which programming language you are in, these five types of constants will be included, and the uses of constants are very wide. Being familiar with and understanding the types and usage of these constants will help us write more efficient and accurate programs.
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