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copied!<p>as you want the decimal to be displayed as sign and not as a lot of 0's you could as well do something like:</p> <pre><code>class Program { static void Main(string[] args) { //these are your "unit precedessors" char[] exponentsbig = new char[] {' ', 'k', 'M', 'G', 'T', 'P', 'E' }; char[] exponentssmall = new char[] { ' ', 'm', 'µ', 'n', 'p', 'a', 'f' }; //some example numbers long[] numbersBig = new long[] { 3000, 3003, 30000, 300000, 300003, 1594900000000000 }; double[] numbersSmall = new double[] { 0.0002, 0.245, 0.245003, 0.000004578 }; //some helper vars int counter = 0; bool edited = false; //let's have a look at what we produce;) string output = ""; //Big numbers incoming!! for (int i = 0; i < numbersBig.Length; i++) { counter=0; double myNumber = Convert.ToDouble(numbersBig[i]); do { edited = false; //something to prevent unnecessary unit-adding and making sure you still divide by 1000 if (myNumber/1000>1 ) { counter++; myNumber /= 1000; edited = true; } } while (edited); output += numbersBig[i] + " " + myNumber + exponentsbig[counter] + "\n"; } //small numbers incoming!! for (int i = 0; i < numbersSmall.Length; i++) { counter = 0; double myNumber = numbersSmall[i]; do { edited = false; //this will go to 3 digits after comma. you can make the compared smaller //to be more exact after the comma, but keep in mind you lose steps then if (myNumber < 1) { counter++; myNumber *= 1000; edited = true; } } while (edited); output += numbersSmall[i] + " " + myNumber + exponentssmall[counter] + "\n"; } //see what we did Console.Write(output); Console.ReadKey(); } } </code></pre>

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