getting a sign of a number

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hi
i want to print the sign of a number.
for example if number is positive i want to print + (not 1)
else print -
if there is any pre defined method please help me

thank you

Posted 12-May-11 22:29pm

PRASAD GDV

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5 solutions

Solution 1

Hope this[^] might help you.

Posted 12-May-11 22:31pm

Ramalinga Koushik

Comments

PRASAD GDV 13-May-11 4:36am

no i dont want to print 1 or -1

math.sign method returns only 1 or -1.
i want to print + or -

Solution 2

Convert Result to string and Append "+" or "-" string before printing output on screen depending on the result you are getting.

Posted 12-May-11 22:43pm

Ra-one

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lukeer · Accepted Answer · 2011-05-12T23:02:00

Solution 4

You could modify the format string in the following example:

double yourDouble = 2.34D;
string outputString = string.Format("{0:+0.00;-0.00;}",yourDouble);

With the format string changed to "{0:+;-;}" it just prints '+' or '-'. But Why would you separate it from the number?

Posted 12-May-11 23:02pm

lukeer

Updated 12-May-11 23:04pm

v2

nit_singh · Accepted Answer · 2011-05-12T23:09:00

Whay dont you craete a Extension class and provide your functionalitu

like First create a custom static class with your requirements

public static class MyExtensionClass
    {
        public static string ToCustomString(this int value)
        {
            return (value > 0 ? "+" + value : value.ToString());
        }
    }

and than use it like that

int s = 1;
int s1 = -1;
Response.Write(s.ToCustomString()); //output : +1
Response.Write(s1.ToCustomString());//output : -1

By using this no need to write this conversion logic to every place.

Wayne Gaylard · Accepted Answer · 2011-05-12T22:56:00

The answer to this depends on what you want to print onto. Do you want to print to paper, to a TextBox, or what? I don't think you are going to get away from doing something like this

C#

if (myInt < 0)
                output = "-" + myInt.ToString();
            else
                output = "+" + myInt.ToString();

Hope this helps.