public static void Main()
Console.WriteLine("Welcome! Please enter your major below!");
major = Console.ReadLine();
Console.WriteLine("Please enter your score as a whole number between 0 and 100.");
score = Console.ReadLine();
if (!Int32.TryParse(score, out intScore))
{Console.WriteLine("You have not entered a whole number! Please Re-Enter.");
int intScore2 = Convert.ToInt32(score);
bool greater0 = intScore2>=0;
bool less100 = intScore2<=100;
if(!(greater0 && less100))
{Console.WriteLine("Please enter a number between 0 and 100.");
{yourScore = "You get an A";}
else if(intScore2<90 & intScore2>=80)
{yourScore = "You get a B";}
else if(intScore2<80 & intScore2>=70)
{yourScore = "You get a C";}
else if(intScore2<70 & intScore2>=60)
{yourScore = "You get a D";}
{yourScore = "You get an F.";}
Console.WriteLine(yourScore);
if(intScore2>=90 && major == "Information Systems")
{Console.WriteLine("Congratulations! You are one of the best students in IS.");}
else if(intScore2>=90 && major != "Information Systems")
{Console.WriteLine("Congratulations! You are one of the best students.");}