How to determine floating-point constants in the C lang…

In the C programming language, real constants can be identified by the following method:

1. In C programming, real constants are by default double precision floating point numbers. To specify the type of real constant you can use suffixes. For example, using “f” as a suffix indicates the constant is single precision float, and using “l” as a suffix indicates the constant is long double.
2. When using decimals: Real constants are automatically assumed to be double-precision floating points if they contain a decimal point. For example, 3.14 is considered double-precision floating point.
3. Real constants can also be represented using exponential notation, using “E” or “e” to denote the exponent part. For example, 1.23e-4 represents a real constant in scientific notation.

It is important to note that no matter which method is used, the C compiler will default real constants to double-precision floating-point numbers unless a type suffix or explicit type conversion is used to specify its type.