[UNANSWERED ]float

Question

I have read many of explanations yet don't understand the point. Is float like an array of numbers and a random positioned comma?
Like 123456 (put the comma where ever you like)
And what's the point in such a variable?

Answer 1

float is a primitive data type, just like int, double, short or long in Java.

Variables of this type can have values from -3.4E38 (-3.4 * 1038) to +3.4E38 (+3.4 * 1038) and occupy 4 bytes in  memory. Values are represented with approximately 7 decimal digits accuracy.

Answer 2

An int or long can only hold whole numbers like 1, 583, 900009 or 12

But a float can hold numbers with a fractional part like 1.04 or 4275.678

Use int if you don't need to hold fractions but float if you do. For instance if you write a program where you need to calculate the width of the screen in pixels you use an int but to hold the value of 12 divided by 17 you need a float.

Answer 3

@Shane
I need double for that.
@Toni
Thx for the copypaste