C# Conditions and IF statements example

Here is a simple console application for letter grade calculation.

using System.Numerics;

Console.WriteLine("MidTerm Grade:");

byte midterm = Convert.ToByte(Console.ReadLine());

Console.WriteLine("Final exam grade:");

byte final = Convert.ToByte(Console.ReadLine());

double average = midterm * 0.4 + final * 0.6;

string grade = "";

if (average < 45)

    grade = "FF";

else if (average >= 45 && average <= 55)

    grade = "DD";

else if (average > 55 && average <= 65)

    grade = "D";

else if (average > 65 && average <= 75)

    grade = "C";

else if (average > 75 && average <= 85)

    grade = "B";

else if (average > 85 && average <= 100)

    grade = "A";

Console.WriteLine("Average {0} and final grade {1}", Math.Round(average, 2), grade);

Console.ReadKey();