public static void Main()
Console.WriteLine("Enter the number of professors: ");
string strProfessors = Console.ReadLine();
int iProfessors = Convert.ToInt32(strProfessors);
Console.WriteLine("Enter the number of staffers: ");
string strStaff = Console.ReadLine();
int iStaff = Convert.ToInt32(strStaff);
Console.WriteLine("Enter the number of students: ");
string strStudents = Console.ReadLine();
int iStudents = Convert.ToInt32(strStudents);
if (iProfessors <= 0 || iStaff <= 0 || iStudents <= 0)
Console.WriteLine("Error! Please enter numbers greater than 0.");
double prof_masks = iProfessors * 5.5;
double prof_sanitizer = iProfessors * 1.2;
double prof_gloves = iProfessors * 3.5;
double staff_masks = iStaff * 3.5;
double staff_sanitizer = iStaff * 0.8;
double staff_gloves = iStaff * 2.8;
double student_masks = iStudents * 4.5;
double student_sanitizer = iStudents * 2.1;
double student_gloves = iStudents * 2.5;
double totalMasks = prof_masks + staff_masks + student_masks;
totalMasks = Math.Ceiling(totalMasks);
double totalSanitizer = prof_sanitizer + staff_sanitizer + student_sanitizer;
totalSanitizer = Math.Ceiling(totalSanitizer);
double totalGloves = prof_gloves + staff_gloves + student_gloves;
totalGloves = Math.Ceiling(totalGloves);
Console.WriteLine("Masks: " + totalMasks);
Console.WriteLine("Hand Sanitizers: " + totalSanitizer);
Console.WriteLine("Gloves: " + totalGloves);
double prof_expense = 100 * iProfessors;
double staff_expense = 80 * iStaff;
double student_expense = 150 * iStudents;
double medical_expense = prof_expense + staff_expense + student_expense;
double mask_cost = 8.5 * totalMasks;
double sanitizer_cost = 15.5 * totalSanitizer;
double glove_cost = 6.5 * totalGloves;
double supply_cost = mask_cost + sanitizer_cost + glove_cost;
double potential_benefits = medical_expense - supply_cost - 250;
Console.Write("Benefits: $" + potential_benefits);