C Aciculate Programming Ascendancy

 27 July 21:03   

    Conditional, iteration, jump, and barring administration statements ascendancy a programs breeze of execution.

    An abundance account can make a bend using keywords such as do, while, for, foreach, and in.

    A jump account can be acclimated to alteration program ascendancy using keywords such as break, continue, return, and yield.

    An barring administration account can be acclimated to handle exceptions using keywords such as throw, try-catch, try-finally, and try-catch-finally.

    A codicillary account decides whether to assassinate cipher based on conditions. The if account and the switch account are the two types of codicillary statements in C#.

    As with alotof of C#, the if account has the aforementioned syntax as in C, C++, and Java. Thus, it is accounting in the afterward form:

    :if-statement ::= if ( action ) if-body [else else-body]

    :condition ::= boolean-expression

    :if-body ::= statement-or-statement-block

    :else-body ::= statement-or-statement-block

    The if account evaluates its action announcement to actuate whether to assassinate the if-body. Optionally, an else article can anon chase the if body, accouterment cipher to assassinate if the action is false. Authoritative the else-body addition if account creates the accepted avalanche of if, else if, else if, else if, else statements:

    

     System;

     IfStatementSample

     }

     }

    

    The switch account is agnate to the account from C, C++ and Java.

    Unlike C, anniversary case account haveto accomplishment with a jump account (which can be break or goto or return). In additional words, C# does not abutment abatement through from one case account to the next (thereby eliminating a accepted antecedent of abrupt behaviour in C programs). About stacking of cases is allowed, as in the archetype below. If goto is used, it may accredit to a case characterization or the absence case (e.g. goto case 0 or goto default).

    The default characterization is optional. If no absence case is defined, then the absence behaviour is to do nothing.

    A simple example:

    

     (nCPU)

    

    A nice advance over the C about-face account is that the about-face capricious can be a string. For example:

    

     (aircraft_ident)

    

    An abundance account creates a bend of cipher to assassinate a capricious amount of times. The for loop, the do loop, the while loop, and the foreach bend are the abundance statements in C#.

    TODO

    The for bend additionally has the aforementioned syntax as in additional languages acquired from C. It is accounting in the afterward form:

    :for-loop ::= for ( initialization ; action ; abundance ) body

    :initialization ::= variable-declaration | list-of-statements

    :condition ::= boolean-expression

    :iteration ::= list-of-statements

    :body ::= statement-or-statement-block

    The initialization capricious acknowledgment or statements are accomplished the first time through the for loop, about to acknowledge and initialize an basis variable. The action announcement is evaluated afore anniversary canyon through the physique to actuate whether to assassinate the body. It is generally acclimated to analysis an basis capricious adjoin some limit. If the action evaluates to true, the physique is executed. The abundance statements are accomplished afterwards anniversary canyon through the body, about to accession or cutback an basis variable.

    

     ForLoopSample

     }

     }

    

    The aloft cipher writes the integers from 0 to 99 to the console.

    The foreach account is agnate to the for account in that both acquiesce cipher to iterate over the items of collections, but the foreach account lacks an abundance index, so it works even with collections that abridgement indices altogether. It is accounting in the afterward form:

    :foreach-loop ::= foreach ( variable-declaration in enumerable-expression ) body

    :body ::= statement-or-statement-block

    The enumerable-expression is an announcement of a blazon that accouterments IEnumerable, so it can be an arrangement or a collection. The variable-declaration declares a capricious that will be set to the alternating elements of the enumerable-expression for anniversary canyon through the body. The foreach bend exits if there are no added elements of the enumerable-expression to accredit to the capricious of the variable-declaration.

    

     ForEachSample

     ;

     ( account itemsToWrite)

     System.Console.WriteLine(item);

     }

     }

    

    In the aloft code, the foreach account iterates over the elements of the cord arrangement to address Alpha, Bravo, and Charlie to the console.

    The while bend has the aforementioned syntax as in additional languages acquired from C. It is accounting in the afterward form:

    :while-loop ::= while ( action ) body

    :condition ::= boolean-expression

    :body ::= statement-or-statement-block

    The while bend evaluates its action to actuate whether to run its body. If the action is true, the physique executes. If the action then evaluates to true again, the physique executes again. If the action evaluates to false, the while bend ends.

    

     System;

     WhileLoopSample

     Console.WriteLine(finished);

     }

     }

    

    A jump account can be acclimated to alteration program ascendancy using keywords such as break, continue, return, and yield.

    A yield account is acclimated to make functions

    that acknowledgment a arrangement of ethics as an item implementing

    IEnumerable. Instead of using return

    to acknowledgment the sequence, you use yield return to return

    individual ethics and yield break to end the sequence.

    

     System.Collections.Generic;

     System;

     YieldSample

     Main()

    

     }

     }

    

    Note that you ascertain the action as abiding a

    System.Collections.Generic.IEnumerable parameterized

    to some type, then yield return alone values

    of the constant type. Also, agenda that the physique of the calling

     is accomplished in amid the

    yield return statements.

    An barring administration account can be acclimated to handle exceptions using keywords such as throw, try-catch, try-finally, and try-catch-finally.