{"id":17565,"date":"2025-04-08T20:00:14","date_gmt":"2025-04-08T17:00:14","guid":{"rendered":"https:\/\/fatihsoysal.com\/blog\/while-dongusuyle-gun-3-dongu-gorevleri\/"},"modified":"2025-04-08T20:00:14","modified_gmt":"2025-04-08T17:00:14","slug":"while-dongusuyle-gun-3-dongu-gorevleri","status":"publish","type":"post","link":"https:\/\/fatihsoysal.com\/blog\/while-dongusuyle-gun-3-dongu-gorevleri\/","title":{"rendered":"While D\u00f6ng\u00fcs\u00fcyle G\u00fcn 3 D\u00f6ng\u00fc G\u00f6revleri"},"content":{"rendered":"

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While D\u00f6ng\u00fcs\u00fcyle G\u00fcn 3 D\u00f6ng\u00fc G\u00f6revleri<\/p>\n

Merhaba! Bug\u00fcn, programlamada s\u0131k\u00e7a kullan\u0131lan ve olduk\u00e7a g\u00fc\u00e7l\u00fc bir d\u00f6ng\u00fc t\u00fcr\u00fc olan while d\u00f6ng\u00fcs\u00fc<\/strong> \u00fczerine yo\u011funla\u015faca\u011f\u0131z. \u00d6zellikle d\u00f6ng\u00fcn\u00fcn tekrar say\u0131s\u0131 \u00f6nceden bilinmedi\u011finde veya bir ko\u015fula ba\u011fl\u0131 olarak \u00e7al\u0131\u015fmas\u0131 gerekti\u011finde while d\u00f6ng\u00fcs\u00fc devreye girer. \u00d6ncelikle temel yap\u0131s\u0131n\u0131 inceleyelim, daha sonra pratik \u00f6rnekler ve ipu\u00e7lar\u0131yla konuyu daha da peki\u015ftirelim.<\/p>\n

While D\u00f6ng\u00fcs\u00fcn\u00fcn Temel Yap\u0131s\u0131<\/h2>\n

Bir while d\u00f6ng\u00fcs\u00fc, belirli bir ko\u015ful do\u011fru oldu\u011fu s\u00fcrece kod blo\u011funu tekrar tekrar \u00e7al\u0131\u015ft\u0131r\u0131r. Ko\u015ful yanl\u0131\u015f oldu\u011funda d\u00f6ng\u00fc sona erer. Genel yap\u0131s\u0131 \u015fu \u015fekildedir:<\/p>\n

\nwhile (ko\u015ful) {\n  \/\/ Ko\u015ful do\u011fru oldu\u011fu s\u00fcrece \u00e7al\u0131\u015facak kod blo\u011fu\n}\n<\/code><\/pre>\n
\u00d6rne\u011fin,  kullan\u0131c\u0131n\u0131n 0 girinceye kadar say\u0131 girmesini isteyen bir program yazabiliriz.  Bu durumda, d\u00f6ng\u00fc kullan\u0131c\u0131n\u0131n 0 girmesi ko\u015fuluna ba\u011fl\u0131 olarak sona erecektir.<\/p>\n
Pratik \u00d6rnekler<\/h2>\n
\u015eimdi, while d\u00f6ng\u00fcs\u00fcn\u00fc kullanarak birka\u00e7 pratik \u00f6rnek inceleyelim.  \u0130lk \u00f6rnekte, 1’den 10’a kadar olan say\u0131lar\u0131 ekrana yazd\u0131raca\u011f\u0131z.  Ancak<\/strong>, bu \u00f6rnekte while d\u00f6ng\u00fcs\u00fcn\u00fcn tekrar say\u0131s\u0131 \u00f6nceden bilindi\u011fi i\u00e7in for d\u00f6ng\u00fcs\u00fc daha uygun olacakt\u0131r.  Yine de, while d\u00f6ng\u00fcs\u00fcn\u00fc kullanarak nas\u0131l yap\u0131labilece\u011fini g\u00f6sterelim:<\/p>\n
\nlet i = 1;\nwhile (i <= 10) {\n  console.log(i);\n  i++;\n}\n<\/code><\/pre>\n
\u0130kinci \u00f6rnekte ise, kullan\u0131c\u0131n\u0131n girdi\u011fi say\u0131n\u0131n fakt\u00f6riyelini hesaplayaca\u011f\u0131z.  Bu \u00f6rnekte d\u00f6ng\u00fc, kullan\u0131c\u0131n\u0131n girdi\u011fi say\u0131 0'a e\u015fit veya k\u00fc\u00e7\u00fck olana kadar \u00e7al\u0131\u015facakt\u0131r.<\/p>\n
\nlet sayi = parseInt(prompt(\"L\u00fctfen bir say\u0131 girin:\"));\nlet faktoriyel = 1;\nlet i = 1;\n\nwhile (i <= sayi) {\n  faktoriyel *= i;\n  i++;\n}\n\nconsole.log(sayi + \"! = \" + faktoriyel);\n<\/code><\/pre>\n
Bu \u00f6rneklerde oldu\u011fu gibi, while d\u00f6ng\u00fcs\u00fc esnekli\u011fi sayesinde bir\u00e7ok farkl\u0131 senaryoda kullan\u0131labilir.  \u00d6nemli olan, d\u00f6ng\u00fc ko\u015fulunu do\u011fru bir \u015fekilde tan\u0131mlamak ve sonsuz d\u00f6ng\u00fclere girmemektir. Sonsuz d\u00f6ng\u00fclere girmemek i\u00e7in, d\u00f6ng\u00fc de\u011fi\u015fkeninin her iterasyonda g\u00fcncellendi\u011finden emin olmal\u0131y\u0131z. Aksi takdirde program\u0131n\u0131z \u00e7\u00f6kebilir.<\/p>\n
Dikkat Edilmesi Gerekenler<\/h2>\n
While d\u00f6ng\u00fclerini kullan\u0131rken dikkat etmeniz gereken baz\u0131 noktalar \u015funlard\u0131r:<\/p>\n