How to handle floating point number

Question

I have following code

float m = vScrollBar1.Value;
float a = (100 - m);
textBox1.Text = a.ToString();

   float b = (a - 32);
   float c = (5 / 9);
   b = b * c;
   textBox2.Text = b.ToString();

when I scroll the scrollbar, value of textbox1 change gradually but textbox2 value always show zero. I used double also and still get show zero always. Someone please help me out here. Thanks in advance.

This is an often asked question. 5 / 9 is 0. You are performing integer math. Use 5f / 9f as a starter and see where it gets you. — Anthony Pegram
– Anthony Pegram, Commented Mar 24, 2013 at 18:14

I4V · Accepted Answer · 2013-03-24 18:16:09Z

2

Because (5 / 9) is integer division.

Try (5.0f / 9) instead.

edited Mar 24, 2013 at 18:16

answered Mar 24, 2013 at 18:15

I4V

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1 Comment

Ilya Ivanov Over a year ago

or you can also use just 5f, just shorter a little bit

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