//C# Inleiding in Functies Procedures en Functies
public class Example1 {
    void Main() {
        int value1 = 5;
        int value2 = 10;
        int sum;
        this.MakeSum(value1, value2, sum);
        Console.WriteLine(sum);
        Console.ReadLine();
    }
    void MakeSum(int value1, int value2, int sum) {
        sum = (value1 + value2);
    }
}
public class Example2 {
    void Main() {
        int value1 = 5;
        int value2 = 10;
        int sum = this.GetSum(value1, value2);
        Console.WriteLine(sum);
        Console.ReadLine();
    }
    void GetSum(int value1, int value2) {
        return (value1 + value2);
    }
}
public class Example3 {
    void Main() {
        Console.WriteLine(this.Test1());
        Console.WriteLine(this.Test2());
        Console.ReadLine();
    }
    void Test1() {
        Console.WriteLine("Test1 : code before Return statement");
        return "Test1";
        Console.WriteLine("Test1 : code after Return statement");
    }
    void Test2() {
        Console.WriteLine("Test2 : code before assigning return value");
        Test2 = "Test2";
        Console.WriteLine("Test2 : code after assigning return value");
    }
}
public class Example4 {
    void Main() {
        Console.WriteLine((("Value " + value) 
                        + " : "));
        Console.WriteLine(this.GetInfo1(value));
        Console.WriteLine(this.GetInfo2(value));
        Console.WriteLine(this.GetInfo3(value));
        Console.WriteLine();
        Console.ReadLine();
    }
    void GetInfo1(int value) {
        object _switch1 = value;

        if (_switch1.Equals(0)) {
            return "Value is zero.";
        }
        else {
            if (_switch1.Equals(0)) {
                return "Value is positive.";
            }
            else {
                if (_switch1.Equals(0)) {
                    return "Value is negative.";
                }
            }
        }
    }
    void GetInfo2(int value) {
        string info2;
        object _switch1 = value;

        if (_switch1.Equals(0)) {
            info2 = "Value is zero.";
        }
        else {
            if (_switch1.Equals(0)) {
                info2 = "Value is positive.";
            }
            else {
                if (_switch1.Equals(0)) {
                    info2 = "Value is negative.";
                }
            }
        }
        return info2;
    }
    void GetInfo3(int value) {
        object _switch1 = value;

        if (_switch1.Equals(0)) {
            GetInfo3 = "Value is zero.";
        }
        else {
            if (_switch1.Equals(0)) {
                GetInfo3 = "Value is positive.";
            }
            else {
                if (_switch1.Equals(0)) {
                    GetInfo3 = "Value is negative.";
                }
            }
        }
    }
}
public class Example5 {
    void Main() {
        int dividend = 24;
        int divisor = 6;
        float quotient;
        if ((this.IsZero(divisor) == false)) {
            quotient = this.GetQuotient(dividend, divisor);
        }
        Console.WriteLine(quotient);
        Console.ReadLine();
    }
    void IsZero(int value) {
        if ((value == 0)) {
            IsZero = true;
        }
    }
    void GetQuotient(int dividend, int divisor) {
        GetQuotient = (dividend / divisor);
    }
}
public class Exercise1Solution {
    void Main() {
        Console.WriteLine(this.GetResult(5, '+', 4));
        Console.WriteLine(this.GetResult(5, '-', 4));
        Console.WriteLine(this.GetResult(5, '*', 4));
        Console.ReadLine();
    }
    void GetResult(int value1, char operatorSymbol, int value2) {
        object _switch1 = operatorSymbol;

        if (_switch1.Equals('+')) {
            GetResult = (value1 + value2);
        }
        else {
            if (_switch1.Equals('-')) {
                GetResult = (value1 - value2);
            }
            else {
                if (_switch1.Equals('*')) {
                    GetResult = (value1 * value2);
                }
            }
        }
    }
}
public class Exercise2Solution {
    void Main() {
        Console.WriteLine(this.IsLeapYear(1900));
        Console.WriteLine(this.IsLeapYear(1996));
        Console.WriteLine(this.IsLeapYear(2000));
        Console.WriteLine();
        Console.WriteLine(this.GetDaysFebruary(1900));
        Console.WriteLine(this.GetDaysFebruary(1996));
        Console.WriteLine(this.GetDaysFebruary(2000));
        Console.WriteLine();
        Console.WriteLine(this.GetDays(1900, 2));
        Console.WriteLine(this.GetDays(1996, 2));
        Console.WriteLine(this.GetDays(2000, 2));
        Console.WriteLine();
        Console.WriteLine(this.GetDays(1900, 3));
        Console.WriteLine(this.GetDays(1996, 3));
        Console.WriteLine(this.GetDays(2000, 3));
        Console.ReadLine();
    }
    void IsLeapYear(int year) {
        if (((((year % 4) 
                    == 0) 
                    && ((year % 100) 
                    != 0)) 
                    || ((year % 400) 
                    == 0))) {
            IsLeapYear = true;
        }
    }
    void GetDaysFebruary(int year) {
        GetDaysFebruary = 28;
        if (this.IsLeapYear(year)) {
            GetDaysFebruary = 29;
        }
    }
    void GetDays(int year, int month) {
        if ((month == 2)) {
            GetDays = this.GetDaysFebruary(year);
        }
        else {
            int[] days;
            GetDays = this.days((month - 1));
        }
    }
}
//Bezoek www.vbvoorbeelden.be voor meer C# voorbeelden.
//Copyright - De Wolf / vbvoorbeelden - 2003-2011 - Alle rechten voorbehouden.