VERY simple c++ question

For Beginners

Use "6.12f" for a float.

The difference is, a float is 32 bits of accuracy, and a double is 64. Hence you lose information going from double to float. It's warning you, in case you made a mistake.

When assigning a float you must put an 'f' after the number else the compiler will assume its a double. Therefore your code would look like:

float b;
b = 6.12f;

Hehe .... everyone jumped on that one ;p

Actually, this is not an error, just a warning. The literal "6.12" is considered a double, so the compiler tells you that if you store it in the float "b", you will lose precision. To construct a float literal, just put an "f" in the end, like "6.12f"

Thanks to all