CODEWITHSUNDEEP
c#.nettypes
HElllo_World_Chelik
HElllo_World_Chelik

Reputation: 35

How to convert decimal types?

So i have a problem with decimal type . My task : Description There are a point and a line in 3D space. Find the distance between them. Input:

Nine reals, the 3D coordinates of:

  1.  The given point.

  2.  The point on the line.

  3.  The direction vector of the line.

The length of the direction vector is greater than 1e-8. Output: A real, the distance between the given point and the line. Example:

Input: 1.0 1.0 1.0 2.0 1.0 1.0 0.0 0.0 1.0 Output: 1.0 My code:

 static void Main(string[] args)
{
    var input = Console.ReadLine();
    var numbers = input.Split(' ').Select(x => decimal.Parse(x)).ToArray();
    var m0 = new[] {numbers[0],numbers[1],numbers[2] };
    var m1 = new[] { numbers[3], numbers[4], numbers[5] };
    var s= new[] { numbers[6], numbers[7], numbers[8] };
    decimal[] m1m0=new decimal[3];
    for(int i =0;i<3;i++)
    {
        m1m0[i] = m1[i] - m0[i];
    }
    
    decimal[] m1m0s = new decimal[3];
    m1m0s[0] = m1m0[1] * s[2] - m1m0[2] * s[1];
    m1m0s[1] = m1m0[2] * s[0] - m1m0[0] * s[2];
    m1m0s[2] = m1m0[0] * s[1] - m1m0[1] * s[0];
    var d = GetAbs(m1m0s[0], m1m0s[1], m1m0s[2]) / GetAbs(s[0], s[1], s[2]);

    Console.WriteLine((decimal)d);
}
static decimal GetAbs(decimal a , decimal b , decimal c )
{
    var  d = a * a + b * b + c * c;
    double e = (double)d;
    var temp= Math.Sqrt(e);
    decimal sqrt = Convert.ToDecimal(temp);
    return sqrt ;
}

My result of program : input 1.0 1.0 1.0 2.0 1.0 1.0 0.0 0.0 1.0 output 1

I need my result to be with a floating point, even if I get an integer type .Output need to be 1.0 or 2.0 ,but not a 1 or 2 .

Upvotes: 0

Views: 95

Answers (2)

ASh
ASh

Reputation: 35733

Console.WriteLine(d.ToString("0.0#######"));

format string "0.0#######" cuts all trailing zeroez but guarantees at least one digit after decimal point.

possible input and ouput:

Math.Sqrt(2);
1.41421356

Math.Sqrt(0.02); 
0.14142136

Math.Sqrt(1);
1.0

Math.Sqrt(0.0001);
0.01

Upvotes: 1

Nikhil Patil
Nikhil Patil

Reputation: 2540

Since you want a decimal point only if value is a whole number and preserve the digits if it a fraction do it as below -

if (d % 1 == 0)
{
     Console.WriteLine(String.Format("{0:0.0}", d));
}
else
{
     Console.WriteLine(d);
}

Upvotes: 0

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