Displaying floating point values

1. How do you show a floating-point number?
2. How to display floating point numbers in C?
3. Why 0.1 0.2 is not 0.3 Python?

How do you show a floating-point number?

Like scientific notation, floating-point numbers have a sign, mantissa (M), base (B), and exponent (E), as shown in Figure 5.27. For example, the number 4.1 × 10³ is the decimal scientific notation for 4100. It has a mantissa of 4.1, a base of 10, and an exponent of 3.

How to display floating point numbers in C?

To declare floating point variables and assign the values to the variable, use the float keyword, followed by key=value pairs of the variable name and value, each separated by a comma (,).

Why 0.1 0.2 is not 0.3 Python?

Similarly, the binary value of 0.2 is stored as 0.001100110.. Now, when you add 0.1 + 0.2 in Python(or in some other programming language), Python converts 0.1 and 0.2 to its binary form. Then it performs the addition. The result will never be equal to 0.3 exact.