Question

I need to write a program that finds the biggest of five numbers by using only five if statements.

Examples:

a	b	c	d	e	biggest
5	2	2	4	1	5
-2	-22	1	0	0	1
-2	4	3	2	0	4
0	-2.5	0	5	5	5
-3	-0.5	-1.1	-2	-0.1	-0.1

 

Answer 1

Try this code:

using System;

class TheBiggestOfFiveNumbers
{
    static void Main()
    {
        Console.WriteLine("Please write 5 numbers:");
        decimal a = decimal.Parse(Console.ReadLine());
        decimal b = decimal.Parse(Console.ReadLine());
        decimal c = decimal.Parse(Console.ReadLine());
        decimal d = decimal.Parse(Console.ReadLine());
        decimal e = decimal.Parse(Console.ReadLine());

        if ((a >= b) && (a >= c) && (a >= d) && (a >= e))
        {
            Console.WriteLine("The biggest number is: {0}", a);
            return;
        }
        if ((b >= a) && (b >= c) && (b >= d) && (b >= c))
        {
            Console.WriteLine("The biggest number is: {0}", b);
            return;
        }
        if ((c >= a) && (c >= b) && (c >= d) && (c >= e))
        {
            Console.WriteLine("The biggest number is: {0}", c);
            return;
        }
        if ((d >= a) && (d >= b) && (d >= c) && (d >= e))
        {
            Console.WriteLine("The biggest number is: {0}", d);
            return;
        }
        if ((e >= a) && (e >= b) && (e >= c) && (e >= d))
        {
            Console.WriteLine("The biggest number is: {0}", e);
            return;
        }
    }
}

Answer 2

Or you can do it with an array and use on it the method .Max();

Like this:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;


class Task
{
    static void Main()
    {
        decimal a = decimal.Parse(Console.ReadLine());
        decimal b = decimal.Parse(Console.ReadLine());
        decimal c = decimal.Parse(Console.ReadLine());
        decimal d = decimal.Parse(Console.ReadLine());
        decimal e = decimal.Parse(Console.ReadLine());

        decimal[] arrayNumbers = { a, b, c, d, e };
        decimal arrayBiggest = arrayNumbers.Max();

        Console.WriteLine(arrayBiggest);
    }
}