What does 2f mean in c language?

In C language, 2f represents a floating point constant with a value of 2.0. Extension: Its usage rules include: use a decimal point to represent the decimal part; the suffix f or F represents a floating point number; if not specified, the default is a double-precision floating point number; floating point numbers are usually used to represent decimals or real numbers with limited precision.

In C language, what does 2f mean?

In C language, 2f represents a floating point constant with a value of 2.0.

Extensions:

• Floating point number constants use the decimal point (.) to represent the decimal part.
• The suffix f or F indicates that the constant is a floating point number. If no suffix is ​​specified, it defaults to a double precision floating point number.
• 2.0 is a double precision floating point number that represents 2.000000000000000000e 00 or 2 x 10^0.
• In C language, floating point numbers are usually used to represent decimals or real numbers, and due to their limited precision, sometimes some numbers may not be accurately represented.

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