Simple division math error using float number???

[omid_juve]

hi
plz check this simple code

[Ttelmah]

Because you are not using float....

In _C_ nothing to do with CCS, if you perform a maths operation between two numbers, the compiler looks at the types of both numbers and uses the maths for the highest type. You have two 8bit integers in the source, so integer maths is used. If you change one number to be float, then float maths will be used, so:

ffl=open/100.0;

or

ffl=(float)open/100;

In the first case the constant divisor is made a float (adding a decimal does this). In the second, 'open' is 'cast' to a float before it is used.

This is standard C and any book on the subject should explain this.

Best Wishes

[omid_juve]

Thanks it`s ok now