Calculate values of a function

Proposed exercise

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Create a program to display certain values of the function y = x2 - 2x + 1 (using integer numbers for x, ranging from -10 to +10)

Output

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Solution

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using System;
public class DisplayFunction
{
public static void Main()
{
int y, x;

Console.WriteLine("y = x² - 2x +1");
Console.WriteLine();

for (x=-10; x <= 10; x++)
{
y = x*x - 2*x + 1;
Console.WriteLine(
"x = {0} ; y=({0})² - 2*({0}) +1 = {1}",
x, y);
}
}
}