What are the rules for real constants in the C language?
The rules for real constants in the C language are as follows:
- Real constants can be decimal numbers, exponential form, or hexadecimal numbers.
- Decimal numbers can include a decimal point and an exponent part. For example: 3.14, -0.25, 1.5e10.
- In exponential notation, the exponent part is represented by the letter E or e. For example, 1.5e10 represents 1.5 multiplied by 10 to the power of 10.
- Hexadecimal numbers start with 0x or 0X, and can include a decimal point or exponent. For example: 0x1A, -0x2.5p2.
- twice as much
- to drift or hover in the air, suspended or supported.
- Extended precision floating point data type
- Signed constants can have positive or negative signs, where the positive sign can be omitted.
- In C language, real type constants do not have leading zeros, so 0.5 represents 0.5, not 05.
- decimal number
- twice
- extended double
These rules allow for defining various real number constants in the C language and specifying their precision and range as needed.
