Out of fun, I solved Nice Angles challenge on CodeEval in C# 4.0: CHALLENGE DESCRIPTION:Write a program that outputs the value of angle, reducing its  fractional part to minutes and seconds.INPUT SAMPLE:The first argument is a path to a file that contains the values of  angles with their decimal fractions:330.399918330.00114.645303190.25254.16991217OUTPUT SAMPLE:Print to stdout values of angles with their fractional parts reduced  to minutes and seconds.The whole and fractional parts are separated by period, minutes are  separated by apostrophe, seconds by double quotes. The values of  minutes and seconds are shown as two numbers (with leading zeros if  needed). 330.23'59 0.00'03 14.38'43 0.15'00 254.10'11This is the code I used to solve the problem:public static void ConvertToMinSec(string path)        {            using (StreamReader reader = File.OpenText(path))            {                while (!reader.EndOfStream)                {                    var degreeValues = reader.ReadLine();                    if (!string.IsNullOrWhiteSpace(degreeValues))                    {                        var totalVal = degreeValues.Split('.');                        if (totalVal.Length == 1)                        {                            var temp = totalVal[0] + .0;                            totalVal = temp.Split('.');                        }                        var intPart = totalVal[0];                        var decimalPart =  0. + totalVal[1];                        decimal minutes;                        decimal.TryParse(decimalPart, out minutes);                        minutes = decimal.Multiply(minutes, 60);                        var minutePart = (int)minutes;                        var remainingDecimal = minutes.ToString().Split('.');                        if (remainingDecimal.Length == 1)                        {                            var tempDecimal = remainingDecimal[0] + .0;                            remainingDecimal = tempDecimal.Split('.');                        }                        decimal seconds;                        decimal.TryParse(0. + remainingDecimal[1], out seconds);                        seconds = seconds*60;                        var secondsPart = (int) seconds;                        var report = string.Format({0}+.+{1:00}+'+{2:00}+'', intPart,                            minutePart, secondsPart);                        Console.WriteLine(report);                    }                }            }
Nice Angles - Code Eval challenge
c#;programming challenge;converting;formatting;exception
At the heart of the solution, there should be a function that converts decimal degrees into a dmm'ss string.  Assuming that the input is in a reasonable domain (between 0 and 360, for example), the conversion algorithm should be simple and regular.  Above all, it should be purely mathematical at this point  you shouldn't be trying to do any string parsing.Your format string had lots of unnecessary concatenation.public static string ToDegMinSec(double dec){    int degrees = (int)dec;    dec = 60 * (dec - degrees);    int minutes = (int)dec;    dec = 60 * (dec - minutes);    int seconds = (int)dec;    return string.Format({0}.{1:00}'{2:00}\, degrees, minutes, seconds);}