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Lab: Methods
Declaring and Invoking Methods
Sign of Integer Numbers
using System; namespace Sign_of_Integer_Numbers { internal class Program { static void Main(string[] args) { Console.Write("n = "); int n = int.Parse(Console.ReadLine()); PrintNumber(n); Console.ReadLine(); } static void PrintNumber(int n) { if(n > 0) { Console.WriteLine($"The number {n} is positive."); } else if (n == 0) { Console.WriteLine($"The number {n} is zero"); } else { Console.WriteLine($"The number {n} is negative."); } } } }
Grades
using System; namespace Grades { internal class Program { static void Main(string[] args) { double grade = double.Parse(Console.ReadLine()); Print(grade); Console.ReadLine(); }
private static void Print(double grade) { if (grade >= 2.00 && grade <= 2.99) { Console.WriteLine("Fail"); } else if (grade >= 3.00 && grade <= 3.49) { Console.WriteLine("Poor"); } else if (grade >= 3.50 && grade <= 4.49) { Console.WriteLine("Good"); } else if (grade >= 4.50 && grade <= 5.49) { Console.WriteLine("Very good"); } else { Console.WriteLine("Excellent"); } } } }
Calculations
using System; namespace Calculations { internal class Program { static void Main(string[] args) { string command = Console.ReadLine(); int a = int.Parse(Console.ReadLine()); int b = int.Parse(Console.ReadLine()); switch (command) { case "add": Add(a, b); break; case "multiply": Multiply(a, b); break; case "subtract": Subtract(a, b); break; case "divide": Divide(a, b); break;
Orders
using namespace _05._Orders { class Program { static void Main(string[] args) { string type = Console.ReadLine(); int quantity = int.Parse(Console.ReadLine()); Orders(type, quantity); } private static void Orders(string type, int quantity) { double result = 0.00; switch (type) { case "coffee": result = quantity * 1.50; break; case "water": result = quantity * 1.00; break; case "coke": result = quantity * 1.40; break; case "snacks": result = quantity * 2.00; break; default: break; } Console.WriteLine($"{result:F2}"); } } }
II. Returning Values and Overloading
Calculate Rectangle Area
using System; namespace Calculate_Rectangle_Area { internal class Program { static void Main() { double width = double.Parse(Console.ReadLine()); double height = double.Parse(Console.ReadLine()); double result = Area(width, height); Console.WriteLine(result); Console.ReadLine(); } static double Area(double width, double height) { return width * height; } } }
Math Power
using System; namespace Math_Power { internal class Program { static void Main() { double number = double.Parse(Console.ReadLine()); int power = int.Parse(Console.ReadLine()); double result = MathPower(number, power); Console.WriteLine(result); Console.ReadLine(); } static double MathPower(double number, int power) { double result = 1; for (int i = 0; i < power; i++) result *= number; return result; } } }
int a = int.Parse(Console.ReadLine()); int b = int.Parse(Console.ReadLine()); int max = GetMax(a, b); Console.WriteLine(max); } else if (type == "char") { char b = char.Parse(Console.ReadLine()); char a = char.Parse(Console.ReadLine()); char max = GetMax(a, b); Console.WriteLine(max); } else if (type == "string") { string a = Console.ReadLine(); string b = Console.ReadLine(); string max = GetMax(a, b); Console.WriteLine(max); } Console.ReadLine(); } } }
Multiply Evens by Odds
using System; namespace Multiply_Evens_by_Odds { internal class Program { static void Main(string[] args) { int n = int.Parse(Console.ReadLine()); Math.Abs(n); int sumofDigits = 0; int sumofEvenAndOdds = 0; int sumOdd = 0; int sumEven = 0; int Multiple = 0; GetSumOfEvenDigits(n, sumofDigits, sumEven); GetSumOfOddDigits(n, sumofDigits, sumOdd); GetMultipleOfEvenAndOdds(sumofEvenAndOdds, sumOdd, sumEven); Console.WriteLine(Multiple); Console.ReadLine(); } static void GetMultipleOfEvenAndOdds(int Multiple, int sumOdd, int sumEven) {
Multiple = sumOdd * sumEven; } static void GetSumOfEvenDigits(int n, int sumofDigits, int sumEven) { sumEven = 0; sumofDigits = 0; for (int num = 1; num <= n; num++) { while (num != 0) { sumofDigits += num % 10; num = num / 10; } if (sumofDigits >= 0) { sumEven += sumofDigits; } } } static void GetSumOfOddDigits(int sumofDigits, int sumOdd, int n) { sumOdd = 0; sumofDigits = 0; for (int num = 1; num <= n; num++) { while (num != 0) { sumofDigits += num % 10; num = num / 10; } if (sumofDigits <= 0) { sumOdd += sumofDigits; } } } } }
case "-": Console.WriteLine(a - b); break; case "*": Console.WriteLine(a * b); break; case "/": Console.WriteLine(a / b); break; default: break; } return result; } } }
