<\/div>\n

Bu yaz\u0131m\u0131z da,C#’ta de\u011fi\u015fken kavram\u0131ndan ve kullan\u0131m\u0131ndan bahsedece\u011fim.
\nDe\u011fi\u015fkenler,verilerin ge\u00e7ici s\u00fcreli\u011fine depoland\u0131\u011f\u0131 yerdir.De\u011fi\u015fkenler i\u00e7ine verilerimizi istedi\u011fimiz \u015fekilde koyabilir,bu verileri istedi\u011fimiz yerde \u00e7a\u011f\u0131rabilir ve kullanabiliriz.
\n
\nC# programlama dilinde de\u011fi\u015fken tan\u0131mlarken o de\u011fi\u015fkenin tipinide belirtmeniz gerekiyor.De\u011fi\u015fkenin tipini belirleyen fakt\u00f6rler,i\u00e7lerindeki verilerin \u00e7e\u015fitleridir.<\/p>\n

\u00d6ncelikle de\u011fi\u015fken tiplerimizi g\u00f6relim ve sonras\u0131nda nas\u0131l kullan\u0131ld\u0131\u011f\u0131na bakal\u0131m.
\nTabi ba\u015f kural de\u011fi\u015fken isimlerinde T\u00fcrk\u00e7e karakter kullanmayaca\u011f\u0131z!
\n $\"De\u011fi\u015fken$ <\/a><\/p>\n

Tabloda da g\u00f6rd\u00fc\u011f\u00fcn\u00fcz gibi de\u011fi\u015fken tipleri genel anlamda 3 e ayr\u0131l\u0131yor.
\nSay\u0131,Metin,Karakter ve Mant\u0131ksal De\u011fi\u015fkenler
\nSay\u0131 De\u011fi\u015fkenleri:<\/strong>Tabloda de\u011fer aral\u0131\u011f\u0131na bakarsan\u0131z e\u011fer,say\u0131sal i\u015flem ve aral\u0131k olan de\u011fi\u015fkenler say\u0131 de\u011fi\u015fkenleridir ve sadece say\u0131sal de\u011ferler tutabiliriz.
\nDikkat!Say\u0131 de\u011fi\u015fkenlerine de\u011fer atarken t\u0131rnak kullan\u0131lmaz.
\nMetin De\u011fi\u015fkenleri:<\/strong>Bu t\u00fcr de\u011fi\u015fkenler bir yaz\u0131dan,metinden,kelimeden olu\u015fan verileri saklamak i\u00e7in kullan\u0131l\u0131r.De\u011fi\u015fken tipinin ismi sadece String tir.
\nKarakter De\u011fi\u015fkenler:<\/strong>Tek bir karakterden olu\u015fan veriyi saklayacak de\u011fi\u015fken t\u00fcr\u00fcd\u00fcr.De\u011fi\u015fken tipi sadece char d\u0131r.
\nMant\u0131ksal De\u011fi\u015fkenler:<\/strong>Do\u011fru ya da yanl\u0131\u015f mant\u0131\u011f\u0131nda de\u011fi\u015fkenler.Bool<\/p>\n

De\u011fi\u015fken Tan\u0131mlaman\u0131n Form\u00fcl\u00fc
\n<\/strong>DegiskenTipi + DegiskenAdi ;<\/p>\n

1. Y\u00f6ntem<\/strong>
\nstring gencay;\u00a0= Gen\u00e7ay ad\u0131nda de\u011fi\u015fken olu\u015fturuldu.
\nInt a;\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 = a ad\u0131nda Int tipinde\u00a0bir de\u011fi\u015fken olu\u015fturuldu.
\nuInt zuheyla\u00a0\u00a0\u00a0 = zuheyla ad\u0131nda uInt tipinde\u00a0bir de\u011fi\u015fken olu\u015fturuldu.
\n2.Y\u00f6ntem<\/strong>
\nstring fenerbahce,galatasaray,besiktas,trabzon;= fenerbahce,galatasaray,besiktas,trabzon spor adl\u0131 d\u00f6rt adet string tipinde de\u011fi\u015fken olu\u015fturuldu.
\nint a,b,c; =a,b,c ad\u0131nda 3 adet int tipinde de\u011fi\u015fken olu\u015fturuldu.
\nDe\u011fi\u015fkenlere De\u011fer Atama Yollar\u0131
\n<\/strong>Tan\u0131mlad\u0131\u011f\u0131m\u0131z de\u011fi\u015fkenlere bir \u00e7ok farkl\u0131 y\u00f6ntemle de\u011fer atayabiliriz.
\n1.Y\u00f6ntem<\/strong>
\nstring ahmet;
\nahmet = “Merhaba”; = ahmet de\u011fi\u015fkenine “Merhaba” verisi atand\u0131.
\nint a,b,c;
\na = 1;\u00a0\u00a0\u00a0\u00a0 =a de\u011fi\u015fkenine 1 verisi atand\u0131.
\nb = 2;\u00a0\u00a0\u00a0\u00a0 =b de\u011fi\u015fkenine 2 verisi atand\u0131.
\nc = 394; =c de\u011fi\u015fkenine 394 verisi atand\u0131.<\/p>\n

2.Y\u00f6ntem<\/strong>
\nstring kanarya=”23″;\u00a0\u00a0 = kanarya ad\u0131nda string bir de\u011fi\u015fken olu\u015fturuldu ve ayn\u0131 sat\u0131rda o de\u011fi\u015fkene 23 verisi aktar\u0131ld\u0131.Burada dikkat edilmesi gereken nokta,23 say\u0131s\u0131n\u0131n int olmamas\u0131d\u0131r.De\u011fi\u015fken tipimiz string oldu\u011fu ve t\u0131rnak i\u00e7inde yaz\u0131ld\u0131\u011f\u0131 i\u00e7in art\u0131k o 23 metinsel anlamda 23 t\u00fcr.
\nint a=2,b=232,c=0;\u00a0\u00a0\u00a0\u00a0 = a,b,c ad\u0131nda int de\u011fi\u015fkenler olu\u015fturuluyor ve ayn\u0131 sat\u0131rda 2,232 ve\u00a00 verileri atan\u0131yor.<\/p>\n

Son olarak bir say\u0131sal de\u011fer alan de\u011fi\u015fken tipinin aral\u0131\u011f\u0131n\u0131 \u00f6\u011frenmek istiyorsan\u0131z bunun kodlar\u0131 \u015fu \u015fekildedir.
\n\u00d6rn\u00a0byte de\u011fi\u015fkeninin alaca\u011f\u0131 aral\u0131\u011f\u0131 bulal\u0131m.<\/p>\n

byte.MaxValue=byte tipinin alabilece\u011fi en y\u00fcksek de\u011fer.
\nbyte.MinValue=byte tipinin alabilece\u011fi en d\u00fc\u015f\u00fck de\u011fer.
\nsizeOf(byte)\u00a0=byte tipinin RAM de kaplad\u0131\u011f\u0131 alan.(byte cinsinden)<\/p>\n

Not:Asp.NET-C# teknolojisinde de ayn\u0131 \u015fekilde de\u011fi\u015fken kullan\u0131l\u0131r.<\/p>\n

Ek 1<\/strong><\/p>\n

\r\nstring metin = "";\r\nmetin += "Gen\u00e7ay Y\u0131ld\u0131zn";\r\nmetin += "Fenerbah\u00e7eli n";\r\nmetin += "\u00d6\u011frencin";\r\nmetin += "Artvinli-Lazlardann";\r\nConsole.Write(metin);\r\nConsole.Read();\r\n<\/pre>\n<\/a>Yukar\u0131daki de\u011fi\u015fken kullanma sitilinin \u00e7\u0131kt\u0131s\u0131 yandaki gibidir.<\/p>\n
Ek 2
\nSabit De\u011fi\u015fkenler
\nSabitler(constants), program i\u00e7erisinde de\u011feri bir kere verilen ve tekrar de\u011fi\u015ftirilemeyen yap\u0131lard\u0131r. Normal de\u011fi\u015fken gibi tan\u0131mlan\u0131r, ba\u015f\u0131na const ifadesi eklenir.
\n\u00d6rn;<\/p>\n
\r\nconst int sabit=10;\r\n<\/pre>\n\u0130yi \u00e7al\u0131\u015fmalar…<\/p>\n","protected":false},"excerpt":{"rendered":"
Bu yaz\u0131m\u0131z da,C#’ta de\u011fi\u015fken kavram\u0131ndan ve kullan\u0131m\u0131ndan bahsedece\u011fim. De\u011fi\u015fkenler,verilerin ge\u00e7ici s\u00fcreli\u011fine depoland\u0131\u011f\u0131 yerdir.De\u011fi\u015fkenler i\u00e7ine verilerimizi istedi\u011fimiz \u015fekilde koyabilir,bu verileri istedi\u011fimiz yerde \u00e7a\u011f\u0131rabilir ve kullanabiliriz.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[27,29,30,31],"class_list":["post-37","post","type-post","status-publish","format-standard","hentry","category-c-sharp-c","tag-c","tag-degiskenler","tag-int","tag-string"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/37","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/comments?post=37"}],"version-history":[{"count":0,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/posts\/37\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/media?parent=37"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/categories?post=37"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gencayyildiz.com\/blog\/wp-json\/wp\/v2\/tags?post=37"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}