Skip to main content

C# - Loops

There may be a situation, when you need to execute a block of code several number of times. In general, the statements are executed sequentially: The first statement in a function is executed first, followed by the second, and so on.
Programming languages provide various control structures that allow for more complicated execution paths. More Info: C Sharp (programming language)

A loop statement allows us to execute a statement or a group of statements multiple times and following is the general from of a loop statement in most of the programming languages:
C# provides following types of loop to handle looping requirements. Click the following links to check their detail.
Loop TypeDescription
while loop
It repeats a statement or a group of statements while a given condition is true. It tests the condition before executing the loop body.
for loop
It executes a sequence of statements multiple times and abbreviates the code that manages the loop variable.
do...while loop
It is similar to a while statement, except that it tests the condition at the end of the loop body
nested loops
You can use one or more loop inside any another while, for or do..while loop.

Loop Control Statements

Loop control statements change execution from its normal sequence. When execution leaves a scope, all automatic objects that were created in that scope are destroyed.
C# provides the following control statements. Click the following links to check their details.
Control StatementDescription
break statement
Terminates the loop or switch statement and transfers execution to the statement immediately following the loop or switch.
continue statement
Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating.

Infinite Loop

A loop becomes infinite loop if a condition never becomes false. The for loop is traditionally used for this purpose. Since none of the three expressions that form the for loop are required, you can make an endless loop by leaving the conditional expression empty.

Example

using System;
namespace Loops
{
   class Program
   {
      static void Main(string[] args)
      {
         for (; ; )
         {
            Console.WriteLine("Hey! I am Trapped");
         }
      }
   }
} 
When the conditional expression is absent, it is assumed to be true. You may have an initialization and increment expression, but programmers more commonly use the for(;;) construct to signify an infinite loop.

Comments

Popular posts from this blog

C# Nullables

C# provides a special data types, the  nullable  types, to which you can assign normal range of values as well as null values.  C# Methods For example, you can store any value from -2,147,483,648 to 2,147,483,647 or null in a Nullable<Int32> variable. Similarly, you can assign true, false, or null in a Nullable<bool> variable. Syntax for declaring a  nullable  type is as follows: < data_type> ? <variable_name> = null; The following example demonstrates use of nullable data types: using System ; namespace CalculatorApplication { class NullablesAtShow { static void Main ( string [] args ) { int ? num1 = null ; int ? num2 = 45 ; double ? num3 = new double ?(); double ? num4 = 3.14157 ; bool ? boolval = new bool ?(); // display the values Console . WriteLine ( "Nullables at Show: {0}, {1}, {2}, {3}" , ...

C# - Constants and Literals

The constants refer to fixed values that the program may not alter during its execution. These fixed values are also called literals. Constants can be of any of the basic data types like an integer constant, a floating constant, a character constant, or a string literal. There are also enumeration constants as well. The constants are treated just like regular variables except that their values cannot be modified after their definition.  More Info:  C Sharp (programming language) Integer Literals An integer literal can be a decimal, or hexadecimal constant. A prefix specifies the base or radix: 0x or 0X for hexadecimal, and there is no prefix id for decimal. An integer literal can also have a suffix that is a combination of U and L, for unsigned and long, respectively. The suffix can be uppercase or lowercase and can be in any order. Here are some examples of integer literals: 212 /* Legal */ 215u /* Legal */ 0xFeeL /* Legal */ Following a...

C# Methods

A strategy is a gathering of articulations that together play out an errand. Each C# program has no less than one class with a strategy named Main.  To utilize a strategy, you have to:  Characterize the strategy  Call the strategy Methods Defining Methods in C# When you characterize a strategy, you essentially proclaim the components of its structure. The linguistic structure for characterizing a strategy in C# is as per the following: <Access Specifier > <Return Type > <Method Name > (Parameter List) { Method Body } Following are the different components of a technique:  Access Specifier : This decides the perceivability of a variable or a technique from another class.  Return type : A technique may restore an esteem. The arrival sort is the information kind of the esteem the technique returns. On the off chance that the strategy is not restoring any esteems, at that point the arrival sort is void.  ...