Square of stars | C# Online Compiler

Square of stars by Anonymous

A byte is 1 byte(s)
A sbyte is 1 byte(s)
A char is 2 byte(s)

A short is 2 byte(s)
An ushort is 2 byte(s)

An int is 4 byte(s)
An uint is 4 byte(s)

A long is 8 byte(s)
An ulong is 8 byte(s)

A float is 4 byte(s)
A double is 8 byte(s)

A decimal is 16 byte(s)

A boolean is 1 byte(s)


Jadval Zard

for(int i = 1; i <= 10; i++) {
    for(int j = 1; j <= 10; j++) {
        Console.Write(Convert.ToString(i*j)+ " ");
    }
    Console.WriteLine();
}

--------------------------------------------------------
*
**
***
****
*****

Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
    for(int j = 0;  j <= i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
--------------------------------------------------------
*****
****
***
**
*

Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
    for(int j = 0;  j < n-i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}

--------------------------------------------------------

*****
 ****
  ***
   **
    *

Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {

    for(int k = 0;  k < i; k++) {
        Console.Write(" ");
    }    

    for(int j = 0;  j < n-i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}

--------------------------------------------------------

    *
   **
  ***
 ****
*****

Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {

    for(int k = 0;  k < n-i-1; k++) {
        Console.Write(" ");
    }   

    for(int j = 0;  j <= i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}

--------------------------------------------------------

    *
   ***
  *****
 *******
*********

Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {

    for(int k = 0;  k < n-i-1; k++) {
        Console.Write(" ");
    }   

    for(int j = 0;  j < (2*i)+1; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
--------------------------------------------------------
 *******
  *****
   ***
    *

int number, i, k, count = 1;
Console.Write("Enter number of rows\n");
number = int.Parse(Console.ReadLine());
count = 1;
for (k = 1; k <= number - 1; k++)
{
    for (i = 1; i <= count; i++)
        Console.Write(" ");
    count++;
    for (i = 1; i <= 2 * (number - k) - 1; i++)
        Console.Write("*");
    Console.WriteLine();
}
Console.ReadLine();
--------------------------------------------------------

    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *
int number, i, k, count = 1;
Console.Write("Enter number of rows\n");
number = int.Parse(Console.ReadLine());
count = number - 1;
for (k = 1; k <= number; k++)
{
    for (i = 1; i <= count; i++)
        Console.Write(" ");
    count--;
    for (i = 1; i <= 2 * k - 1; i++)
        Console.Write("*");
    Console.WriteLine();
}
count = 1;
for (k = 1; k <= number - 1; k++)
{
    for (i = 1; i <= count; i++)
        Console.Write(" ");
    count++;
    for (i = 1; i <= 2 * (number - k) - 1; i++)
        Console.Write("*");
    Console.WriteLine();
}
Console.ReadLine();



















Find Min and Max


Console.Write("Enter X: ");
int x = Convert.ToInt32(Console.ReadLine());

Console.Write("Enter Y: ");
int y = Convert.ToInt32(Console.ReadLine());

Console.Write("Enter Z: ");
int z = Convert.ToInt32(Console.ReadLine());

int max = 0;
int min = 0;

FindMinMax(x, y, z, out max, out min);
Console.WriteLine("Min = " + min.ToString());
Console.WriteLine("Max = " + max.ToString());


Console.ReadLine();

// using out command we can return multiple results.
static void FindMinMax(int n1, int n2, int n3, out int max, out int min) {

    max = n1;
    min = n1;

    if (n1 >= n2 && n1 >= n3) {
        max = n1;
    }
    if (n2 >= n1 && n1 >= n3) {
        max = n2;
    }
    if (n3 >= n1 && n3 >= n2) {
        max = n3;
    } 

    if (n1 <= n2 && n1 <= n3) {
        min = n1;
    }
    if (n2 <= n1 && n1 <= n3) {
        min = n2;
    }
    if (n3 <= n1 && n3 <= n2) {
        min = n3;
    } 


}

--------------------------------------------------------
Method overloading
--------------------------------------------------------

جدا کردن نام و نام خانوادگی

string fullname = textBox1.Text;
int x = fullname.IndexOf(" ");

string name = fullname.Substring(0, x);
string family = fullname.Substring(x + 1);

--------------------------------------------------------

برنامه چک کردن ایمیل

string email = txtEmail.Text;

int a = email.IndexOf("@");
int d = email.LastIndexOf(".");

if (a == -1 || d == -1 || a > d) {
    MessageBox.Show("error");
} else {
    MessageBox.Show("ok");
}

--------------------------------------------------------
Compile error (;) and Runtime errors (divided by zero) and Logical errors (+ instead of -)

Exception Handling: dont' forget to return; after each catch.
try
{
    // open file/connection to write
}
catch (Exception)
{
    System.IO.IOException => خطای IO
    System.IndexOutOfRangeException => خطای دسترسی به عنصری که در رنج آرایه نیست
    System.ArrayTypeMismatchException => مشابه نبودن نوع آرایه با نوع داده
    System.NullReferenceException => خطا هنگام اشاره به یک شی از نوع نال
    System.DivideByZeroException => تقسیم بر صفر
    System.InvalidCastException => خطای تبدیل نوع
    System.OutOfMemoryException => کمبود حافظه
    System.StackOverflowException => سر ریز شدن پشته
    System.FormatException => empty field
    System.OverflowException => big int
    // file writing error
    throw;
}
finally {
    // close file/connection
}

int is from -2,000,000,000 to +2,000,000,000
اگر حاصل جمع از ۳۲ بیت بیشتر شود باید با متد چک کردن تصحیح کنیم

checked {
    sum = 2000000000 + 2000000000
}
// without checked, c# won't throw Overflow Exception

--------------------------------------------------------
Object Oriented
Encalsulation
Inheritance
Polymorphism = Overloading


define objects:
class_name object_name = new constructor();
--------------------------------------------------------
متد سازنده یا کانستراکتور هر کلاس در سی شارپ هم نام خود کلاس می‌باشد.
این متد رو می‌توان اُورلود نیز کرد.
--------------------------------------------------------
کلاس محاسبه محیط و مساحت مستطیل و استفاده از آن

class Rectangle 
{
    public int Tool;
    public int Arz;

    public Rectangle() {}

    public Rectangle(int t, int a) {
        this.Tool = t;
        this.Arz = a;
    }

    public int Area() {
        return Tool * Arz;
    }

    public int Border() {
        return (Tool + Arz) * 2;
    }

}
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
int myTool = Convert.ToInt32(txtTool.Text);
int myArz = Convert.ToInt32(txtArz.Text);

Rectangle rect = new Rectangle();
rect.Arz = myArz;
rect.Tool = myTool;

int myArea = rect.Area();
int myBorder = rect.Border();

MessageBox.Show("Area: " + myArea.ToString());
MessageBox.Show("Border: " + myBorder.ToString());

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
int myTool = Convert.ToInt32(txtTool.Text);
int myArz = Convert.ToInt32(txtArz.Text);
Rectangle rect2 = new Rectangle(myTool, myArz);

int myArea2 = rect2.Area();
int myBorder2 = rect2.Border();

MessageBox.Show("Area: " + myArea2.ToString());
MessageBox.Show("Border: " + myBorder2.ToString());
--------------------------------------------------------

کلاس محاسبه محیط و مساحت دایره و استفاده از آن

class Circle 
{
    public int Radius;
    double pi = 3.14;

    public Circle() {}

    public Circle(int r) {
        this.Radius = r;
    }

    public double Area() {
        return pi * Radius * Radius;
    }

    public double Border() {
        return pi * Radius * 2;
    }

}
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

int myRadius = Convert.ToInt32(txtRadius.Text);

Circle c = new Circle();
c.Radius = myRadius;

double myArea = c.Area();
double myBorder = c.Border();

MessageBox.Show("Area: " + myArea.ToString());
MessageBox.Show("Border: " + myBorder.ToString());

\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
int myRadius = Convert.ToInt32(txtRadius.Text);
Circle c2 = new Circle(myRadius);

double myArea2 = c2.Area();
double myBorder2 = c2.Border();

MessageBox.Show("Area: " + myArea2.ToString());
MessageBox.Show("Border: " + myBorder2.ToString());
--------------------------------------------------------
محیط و مساحت دایره ای به شعاع سه را حساب کنید
Circle c = new Circle();
c.Radius = 3;
double myborder = c.Border();
double myarea = c.Area();
MessageBox.Show("Mohit:" + myborder.ToString());
MessageBox.Show("Masahat:" + myarea.ToString());
--------------------------------------------------------
محیط و مساحت دایره ای به شعاع سه را حساب کنید
Circle c = new Circle(3);
double myborder = c.Border();
double myarea = c.Area();
MessageBox.Show("Mohit:" + myborder.ToString());
MessageBox.Show("Masahat:" + myarea.ToString());
--------------------------------------------------------
مساحت دایره ای به شعاع دو و دایره ای به شعاع سه 
class Circle 
{
    public int Radius;
    public double pi;

    public Circle() {}

    public double Area() {
        return pi * Radius * Radius;
    }

    public double Border() {
        return pi * Radius * 2;
    }

}

Circle c1 = new Circle();
c1.Radius = 2;
//c1.pi = 3.14;  using static pi in below
double a1 = c1.Area();

Circle c2 = new Circle();
c2.Radius = 3;
//c2.pi = 3.14; using static pi in below
double a2 = c2.Area();
--------------------------------------------------------
class Circle 
{
public static double pi;
}

Circle.pi = 3.14;

// to prevent programmer to change a static variable, we use const instead:
// const must have a value.
public const double pi = 3.14;
--------------------------------------------------------
متد های استاتیک فقط به متغیرهای استاتیک دسترسی دارند
برای استفاده از متدهای استاتیک نیازی به تعریف شی نیست
public static double Area(int Rad) {
    return pi * Rad * Rad;
}

double masahat = Circle.Area(2);
Circle c = new Circle();
c.Radius = 2;
double mohit = c.Border();
--------------------------------------------------------

Array
type[] ArrayName = new type[length];
int[] arr1 = new int[3];
int[] arr1 = new int[3]{2,7,12};

int[] arr2 = new int[3];
arr2[0] = 4;
arr2[1] = 7;
arr2[2] = 43;

arr2.Length; //3

int val2 = (int)arr2.GetValue(2); // val2 = 43 chon GetValue object return mikone, ba (int) tabdil mishe be adad.
// OR
int val2 = arr2[2];


MULTIDIMENTIONAL
int[,] a = new int[2,3];
a[0,0] = 1;
a[0,1] = 2;
a[0,2] = 4;
a[1,0] = 17;
a[1,1] = 177;
a[1,2] = 18;

--------------------------------------------------------
String arrays and methods

معدل / میانگین نمرات
// Scores = 10,16,18,20
string scores = "10,16,18,20";
string[] ScoresArr = scores.Split(',');

double Sum = 0;
for(int i = 0; i < ScoresArr.Length; i++) {
    int score = Convert.ToInt32(ScoresArr[i]);
    Sum = Sum + score;
}

double avg = Sum / (double)ScoresArr.Length;

MessageBox.Show("Moadel = " + avg.ToString());

//////////////////////////////////////////////////////
پیدا کردن بالاترین نمره

string scores = "10,16,18,20";
string[] ScoresArr = scores.Split(',');

int Max = 0;
for(int i = 0; i < ScoresArr.Length; i++) {
    int score = Convert.ToInt32(ScoresArr[i]);
    if (Max < score)
        Max = score;
}

MessageBox.Show("Max Score = " + Max.ToString());

//////////////////////////////////////////////////////
پیدا کردن پایین‌ترین نمره

string scores = "10,16,18,20";
string[] ScoresArr = scores.Split(',');

int Min = 20;
for(int i = 0; i < ScoresArr.Length; i++) {
    int score = Convert.ToInt32(ScoresArr[i]);
    if (Min > score)
        Min = score;
}

MessageBox.Show("Min Score = " + Min.ToString());
//////////////////////////////////////////////////////
ممرتب سازی صعودی نمرات Bubble Sort
string scores = "10,16,18,20";
string[] arr = scores.Split(',');

int temp = 0;

for (int write = 0; write < arr.Length; write++) {
    for(int sort = 0; sort < arr.Length - 1; sort++){
        if ( Convert.ToInt32(arr[sort]) > Convert.ToInt32(arr[sort+1]) ) {
            temp = Convert.ToInt32(arr[sort+1]);
            arr[sort+1] = arr[sort];
            arr[sort] = temp.ToString();
        }
    }
}


string S = "";
for (int i = 0; i < arr.Length; i++) {
    S += arr[i] + ",";
}
MessageBox.Show("Bubble Sort = " + S);

​x
 
A byte is 1 byte(s)
A sbyte is 1 byte(s)
A char is 2 byte(s)
​
A short is 2 byte(s)
An ushort is 2 byte(s)
​
An int is 4 byte(s)
An uint is 4 byte(s)
​
A long is 8 byte(s)
An ulong is 8 byte(s)
​
A float is 4 byte(s)
A double is 8 byte(s)
​
A decimal is 16 byte(s)
​
A boolean is 1 byte(s)
​
​
Jadval Zard
​
for(int i = 1; i <= 10; i++) {
    for(int j = 1; j <= 10; j++) {
        Console.Write(Convert.ToString(i*j)+ " ");
    }
    Console.WriteLine();
}
​
--------------------------------------------------------
*
**
***
****
*****
​
Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
    for(int j = 0;  j <= i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
--------------------------------------------------------
*****
****
***
**
*
​
Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
    for(int j = 0;  j < n-i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
​
--------------------------------------------------------
​
*****
 ****
  ***
   **
    *
​
Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
​
    for(int k = 0;  k < i; k++) {
        Console.Write(" ");
    }    
​
    for(int j = 0;  j < n-i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
​
--------------------------------------------------------
​
    *
   **
  ***
 ****
*****
​
Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
​
    for(int k = 0;  k < n-i-1; k++) {
        Console.Write(" ");
    }   
​
    for(int j = 0;  j <= i; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
​
--------------------------------------------------------
​
    *
   ***
  *****
 *******
*********
​
Console.Write("Enter N: "); //3
int n = Convert.ToInt32(Console.ReadLine());
for(int i = 0; i < n; i++) {
​
    for(int k = 0;  k < n-i-1; k++) {
        Console.Write(" ");
    }   
​
    for(int j = 0;  j < (2*i)+1; j++) {
        Console.Write("*");
    }
    Console.WriteLine();
}
--------------------------------------------------------
 *******
  *****
   ***
    *
​
int number, i, k, count = 1;
Console.Write("Enter number of rows\n");
number = int.Parse(Console.ReadLine());
count = 1;
for (k = 1; k <= number - 1; k++)
{
    for (i = 1; i <= count; i++)
        Console.Write(" ");
    count++;
    for (i = 1; i <= 2 * (number - k) - 1; i++)
        Console.Write("*");
    Console.WriteLine();
}
Console.ReadLine();
--------------------------------------------------------
​
    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *
int number, i, k, count = 1;
Console.Write("Enter number of rows\n");
number = int.Parse(Console.ReadLine());
count = number - 1;
for (k = 1; k <= number; k++)
{
    for (i = 1; i <= count; i++)
        Console.Write(" ");
    count--;
    for (i = 1; i <= 2 * k - 1; i++)
        Console.Write("*");
    Console.WriteLine();
}
count = 1;
for (k = 1; k <= number - 1; k++)
{
    for (i = 1; i <= count; i++)
        Console.Write(" ");
    count++;
    for (i = 1; i <= 2 * (number - k) - 1; i++)
        Console.Write("*");
    Console.WriteLine();
}
Console.ReadLine();
​
​
​
​
​
​
​
​
​
​
​
​
​
​
​
​
​
​
​
Find Min and Max
​
​
Console.Write("Enter X: ");
int x = Convert.ToInt32(Console.ReadLine());
​
Console.Write("Enter Y: ");
int y = Convert.ToInt32(Console.ReadLine());
​
Console.Write("Enter Z: ");
int z = Convert.ToInt32(Console.ReadLine());
​
int max = 0;
int min = 0;
​
FindMinMax(x, y, z, out max, out min);
Console.WriteLine("Min = " + min.ToString());
Console.WriteLine("Max = " + max.ToString());
​
​
Console.ReadLine();
​
// using out command we can return multiple results.
static void FindMinMax(int n1, int n2, int n3, out int max, out int min) {
​
    max = n1;
    min = n1;
​
    if (n1 >= n2 && n1 >= n3) {
        max = n1;
    }
    if (n2 >= n1 && n1 >= n3) {
        max = n2;
    }
    if (n3 >= n1 && n3 >= n2) {
        max = n3;
    } 
​
    if (n1 <= n2 && n1 <= n3) {
        min = n1;
    }
    if (n2 <= n1 && n1 <= n3) {
        min = n2;
    }
    if (n3 <= n1 && n3 <= n2) {
        min = n3;
    } 
​
​
}
​
--------------------------------------------------------
Method overloading
--------------------------------------------------------
​
جدا کردن نام و نام خانوادگی
​
string fullname = textBox1.Text;
int x = fullname.IndexOf(" ");
​
string name = fullname.Substring(0, x);
string family = fullname.Substring(x + 1);
​
--------------------------------------------------------
​
برنامه چک کردن ایمیل
​
string email = txtEmail.Text;
​
int a = email.IndexOf("@");
int d = email.LastIndexOf(".");
​
if (a == -1 || d == -1 || a > d) {
    MessageBox.Show("error");
} else {
    MessageBox.Show("ok");
}
​
--------------------------------------------------------
Compile error (;) and Runtime errors (divided by zero) and Logical errors (+ instead of -)
​
Exception Handling: dont' forget to return; after each catch.
try
{
    // open file/connection to write
}
catch (Exception)
{
    System.IO.IOException => خطای IO
    System.IndexOutOfRangeException => خطای دسترسی به عنصری که در رنج آرایه نیست
    System.ArrayTypeMismatchException => مشابه نبودن نوع آرایه با نوع داده
    System.NullReferenceException => خطا هنگام اشاره به یک شی از نوع نال
    System.DivideByZeroException => تقسیم بر صفر
    System.InvalidCastException => خطای تبدیل نوع
    System.OutOfMemoryException => کمبود حافظه
    System.StackOverflowException => سر ریز شدن پشته
    System.FormatException => empty field
    System.OverflowException => big int
    // file writing error
    throw;
}
finally {
    // close file/connection
}
​
int is from -2,000,000,000 to +2,000,000,000
اگر حاصل جمع از ۳۲ بیت بیشتر شود باید با متد چک کردن تصحیح کنیم
​
checked {
    sum = 2000000000 + 2000000000
}
// without checked, c# won't throw Overflow Exception
​
--------------------------------------------------------
Object Oriented
Encalsulation
Inheritance
Polymorphism = Overloading
​
​
define objects:
class_name object_name = new constructor();
--------------------------------------------------------
متد سازنده یا کانستراکتور هر کلاس در سی شارپ هم نام خود کلاس می•باشد.
این متد رو می•توان اُورلود نیز کرد.
--------------------------------------------------------
کلاس محاسبه محیط و مساحت مستطیل و استفاده از آن
​
class Rectangle 
{
    public int Tool;
    public int Arz;
​
    public Rectangle() {}
​
    public Rectangle(int t, int a) {
        this.Tool = t;
        this.Arz = a;
    }
​
    public int Area() {
        return Tool * Arz;
    }
​
    public int Border() {
        return (Tool + Arz) * 2;
    }
​
}
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
int myTool = Convert.ToInt32(txtTool.Text);
int myArz = Convert.ToInt32(txtArz.Text);
​
Rectangle rect = new Rectangle();
rect.Arz = myArz;
rect.Tool = myTool;
​
int myArea = rect.Area();
int myBorder = rect.Border();
​
MessageBox.Show("Area: " + myArea.ToString());
MessageBox.Show("Border: " + myBorder.ToString());
​
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
int myTool = Convert.ToInt32(txtTool.Text);
int myArz = Convert.ToInt32(txtArz.Text);
Rectangle rect2 = new Rectangle(myTool, myArz);
​
int myArea2 = rect2.Area();
int myBorder2 = rect2.Border();
​
MessageBox.Show("Area: " + myArea2.ToString());
MessageBox.Show("Border: " + myBorder2.ToString());
--------------------------------------------------------
​
کلاس محاسبه محیط و مساحت دایره و استفاده از آن
​
class Circle 
{
    public int Radius;
    double pi = 3.14;
​
    public Circle() {}
​
    public Circle(int r) {
        this.Radius = r;
    }
​
    public double Area() {
        return pi * Radius * Radius;
    }
​
    public double Border() {
        return pi * Radius * 2;
    }
​
}
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
​
int myRadius = Convert.ToInt32(txtRadius.Text);
​
Circle c = new Circle();
c.Radius = myRadius;
​
double myArea = c.Area();
double myBorder = c.Border();
​
MessageBox.Show("Area: " + myArea.ToString());
MessageBox.Show("Border: " + myBorder.ToString());
​
\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
int myRadius = Convert.ToInt32(txtRadius.Text);
Circle c2 = new Circle(myRadius);
​
double myArea2 = c2.Area();
double myBorder2 = c2.Border();
​
MessageBox.Show("Area: " + myArea2.ToString());
MessageBox.Show("Border: " + myBorder2.ToString());
--------------------------------------------------------
محیط و مساحت دایره ای به شعاع سه را حساب کنید
Circle c = new Circle();
c.Radius = 3;
double myborder = c.Border();
double myarea = c.Area();
MessageBox.Show("Mohit:" + myborder.ToString());
MessageBox.Show("Masahat:" + myarea.ToString());
--------------------------------------------------------
محیط و مساحت دایره ای به شعاع سه را حساب کنید
Circle c = new Circle(3);
double myborder = c.Border();
double myarea = c.Area();
MessageBox.Show("Mohit:" + myborder.ToString());
MessageBox.Show("Masahat:" + myarea.ToString());
--------------------------------------------------------
مساحت دایره ای به شعاع دو و دایره ای به شعاع سه 
class Circle 
{
    public int Radius;
    public double pi;
​
    public Circle() {}
​
    public double Area() {
        return pi * Radius * Radius;
    }
​
    public double Border() {
        return pi * Radius * 2;
    }
​
}
​
Circle c1 = new Circle();
c1.Radius = 2;
//c1.pi = 3.14;  using static pi in below
double a1 = c1.Area();
​
Circle c2 = new Circle();
c2.Radius = 3;
//c2.pi = 3.14; using static pi in below
double a2 = c2.Area();
--------------------------------------------------------
class Circle 
{
public static double pi;
}
​
Circle.pi = 3.14;
​
// to prevent programmer to change a static variable, we use const instead:
// const must have a value.
public const double pi = 3.14;
--------------------------------------------------------
متد های استاتیک فقط به متغیرهای استاتیک دسترسی دارند
برای استفاده از متدهای استاتیک نیازی به تعریف شی نیست
public static double Area(int Rad) {
    return pi * Rad * Rad;
}
​
double masahat = Circle.Area(2);
Circle c = new Circle();
c.Radius = 2;
double mohit = c.Border();
--------------------------------------------------------
​
Array
type[] ArrayName = new type[length];
int[] arr1 = new int[3];
int[] arr1 = new int[3]{2,7,12};
​
int[] arr2 = new int[3];
arr2[0] = 4;
arr2[1] = 7;
arr2[2] = 43;
​
arr2.Length; //3
​
int val2 = (int)arr2.GetValue(2); // val2 = 43 chon GetValue object return mikone, ba (int) tabdil mishe be adad.
// OR
int val2 = arr2[2];
​
​
MULTIDIMENTIONAL
int[,] a = new int[2,3];
a[0,0] = 1;
a[0,1] = 2;
a[0,2] = 4;
a[1,0] = 17;
a[1,1] = 177;
a[1,2] = 18;
​
--------------------------------------------------------
String arrays and methods
​
معدل / میانگین نمرات
// Scores = 10,16,18,20
string scores = "10,16,18,20";
string[] ScoresArr = scores.Split(',');
​
double Sum = 0;
for(int i = 0; i < ScoresArr.Length; i++) {
    int score = Convert.ToInt32(ScoresArr[i]);
    Sum = Sum + score;
}
​
double avg = Sum / (double)ScoresArr.Length;
​
MessageBox.Show("Moadel = " + avg.ToString());
​
//////////////////////////////////////////////////////
پیدا کردن بالاترین نمره
​
string scores = "10,16,18,20";
string[] ScoresArr = scores.Split(',');
​
int Max = 0;
for(int i = 0; i < ScoresArr.Length; i++) {
    int score = Convert.ToInt32(ScoresArr[i]);
    if (Max < score)
        Max = score;
}
​
MessageBox.Show("Max Score = " + Max.ToString());
​
//////////////////////////////////////////////////////
پیدا کردن پایین•ترین نمره
​
string scores = "10,16,18,20";
string[] ScoresArr = scores.Split(',');
​
int Min = 20;
for(int i = 0; i < ScoresArr.Length; i++) {
    int score = Convert.ToInt32(ScoresArr[i]);
    if (Min > score)
        Min = score;
}
​
MessageBox.Show("Min Score = " + Min.ToString());
//////////////////////////////////////////////////////
ممرتب سازی صعودی نمرات Bubble Sort
string scores = "10,16,18,20";
string[] arr = scores.Split(',');
​
int temp = 0;
​
for (int write = 0; write < arr.Length; write++) {
    for(int sort = 0; sort < arr.Length - 1; sort++){
        if ( Convert.ToInt32(arr[sort]) > Convert.ToInt32(arr[sort+1]) ) {
            temp = Convert.ToInt32(arr[sort+1]);
            arr[sort+1] = arr[sort];
            arr[sort] = temp.ToString();
        }
    }
}
​
​
string S = "";
for (int i = 0; i < arr.Length; i++) {
    S += arr[i] + ",";
}
MessageBox.Show("Bubble Sort = " + S);

Evidencia 1 ; Opcion 2

Enrique Gerardo Moran Gonzalez

Bienvenido a Pokemania

Determina el tamaño de la matríz, debe ser entre 1 y 10:

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