# Programming Fundamentals/Arrays/C Sharp

## arrays.cs

```// This program uses arrays to display temperature conversion tables
// and temperature as an array subscript to find a given conversion.
//
// References:
//     https://www.mathsisfun.com/temperature-conversion.html
//     https://en.wikibooks.org/wiki/C_Sharp_Programming

using System;

public class MainClass
{
public static void Main(String[] args)
{
double[] c;
double[] f;

c = BuildC(100);
f = BuildF(212);
DisplayArray("C", c);
DisplayArray("F", f);
FindTemperature(c, f);
}

private static double[] BuildC(int size)
{
double[] c = new double[size + 1];
int index;
double value;

for (index = 0; index <= size; index += 1)
{
value = (double) index * 9 / 5 + 32;
c[index] = value;
}

return c;
}

private static double[] BuildF(int size)
{
double[] f = new double[size + 1];
int index;
double value;

for (index = 0; index <= size; index += 1)
{
value = (double) (index - 32) * 5 / 9;
f[index] = value;
}

return f;
}

private static void DisplayArray(string name, double[] array)
{
int index;

for (index = 0 ; index <= array.Length - 1 ; index += 1)
{
Console.WriteLine(name + "[" + index + "] = " + array[index]);
}
}

private static void FindTemperature(double[] c, double[] f)
{
int temp;
int size;

size = Minimum(c.Length, f.Length);
do
{
Console.WriteLine("Enter a temperature between 0 and " + (size - 1));
} while (temp < 0 || temp > size - 1);
Console.WriteLine(temp.ToString() + "° Celsius is " + c[temp] + "° Fahrenheit");
Console.WriteLine(temp.ToString() + "° Fahrenheit is " + f[temp] + "° Celsius");
}

private static int Minimum(int value1, int value2)
{
int result;

if (value1 < value2)
{
result = value1;
}
else
{
result = value2;
}

return result;
}
}
```

## Try It

Copy and paste the code above into one of the following free online development environments or use your own C Sharp compiler / interpreter / IDE.