Strings

Компиляция кода

Пример

Циклы do-while

Compiling the Code

Example

for (int counter = 1; counter <= 1000; counter++) { if (counter == 10) break; System.Console.WriteLine(counter); }

Copy the code and paste it into the Main method of a console application.

В следующих примерах показаны варианты цикла do-while.

// An array of integers

int[] array1 = {0, 1, 2, 3, 4, 5};

int x = 0;

do

{

System.Console.WriteLine(array1[x].ToString());

x++;

} while(x < 6);

// An array of strings

string[] array2 = {"hello", "world"};

int y = 0;

do

{

System.Console.WriteLine(array2[y]);

y++;

} while(y < 2);

Прерывание итерационного оператора

В этом примере для прерывания цикла for по достижении счетчиком целых чисел значения "10" используется оператор break.

for (int counter = 1; counter <= 1000; counter++) { if (counter == 10) break; System.Console.WriteLine(counter); }

Скопируйте код и вставьте его в метод Main консольного приложения.

A C# string is a group of one or more characters declared using the string keyword, which is a C# language shortcut for the System..::.String class. Strings in C# are much easier to use, and much less prone to programming errors, than character arrays in C or C++.

A string literal is declared using quotation marks, as shown in the following example:

string greeting = "Hello, World!";

You can extract substrings, and concatenate strings, like this:

string s1 = "orange"; string s2 = "red"; s1 += s2; System.Console.WriteLine(s1); // outputs "orangered" s1 = s1.Substring(2, 5); System.Console.WriteLine(s1); // outputs "anger"

String objects are immutable in that they cannot be changed once created. Methods that act on strings actually return new string objects. Therefore, for performance reasons, large amounts of concatenation or other involved string manipulation should be performed with the StringBuilder class, as demonstrated in the code examples below.

Дата добавления: 2014-12-27