public static void Main()
Console.WriteLine("Choose a method: \n1. Positive/Negative \n2. Pyramid \n3. f(x) = x^4+x^3-7x^2-x+6 \n4. Big or Small");
choice = int.Parse(Console.ReadLine());
Console.WriteLine("That is not an option.");
Console.WriteLine("Choose a method: \n1. Positive/Negative \n2. Pyramid \n3. f(x) = x^4+x^3-7x^2-x+6 \n4. Big or Small");
choice = int.Parse(Console.ReadLine());
public static void Function()
Console.WriteLine("Enter a value for x");
x = int.Parse(Console.ReadLine());
if(((x*x*x*x)+(x*x*x)-(7*x*x)-x+6) == 0)
Console.WriteLine("The value " + x + " IS a root of the equation");
Console.WriteLine("The value " + x + " IS NOT a root of the equation");
public static void BigSmall()
Console.WriteLine("Enter two numbers:");
num1 = int.Parse(Console.ReadLine());
num2 = int.Parse(Console.ReadLine());
Console.WriteLine("the second number is bigger. the difference is " + (num2-num1) + ".");
Console.WriteLine("the first number is bigger. the difference is " + (num1-num2) + ".");
Console.WriteLine("The numbers are equal");
public static void Pyramid()
Console.WriteLine("How big should the pyramid be?");
int size = int.Parse(Console.ReadLine());
for(i = 1; i <= size; i++)
for(i = size; i >= 1; i--)
public static void Posnev()
Console.WriteLine("Enter a number");
num = int.Parse(Console.ReadLine());
Console.WriteLine("Your number is positive");
Console.WriteLine("Your number is negetive");
Console.WriteLine("Your number is 0");