{"id":10681,"date":"2024-03-01T18:35:20","date_gmt":"2024-03-01T18:35:20","guid":{"rendered":"https:\/\/adelnasim.com\/docs\/courses\/oop\/constant-object-constant-member-function\/"},"modified":"2024-04-07T01:19:45","modified_gmt":"2024-04-07T01:19:45","slug":"constant-object-constant-member-function","status":"publish","type":"docs","link":"https:\/\/adelnasim.com\/ar\/docs\/courses\/oop\/constant-object-constant-member-function\/","title":{"rendered":"\u0627\u0644\u0643\u0627\u0626\u0646 \u0627\u0644\u062b\u0627\u0628\u062a Constant Object \u0648\u062f\u0627\u0644\u0629 \u0627\u0644\u0639\u0636\u0648 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 Constant Member Function"},"content":{"rendered":"<h1>\u0627\u0644\u0645\u0642\u062f\u0645\u0629<\/h1>\n<p>\u0641\u064a \u0644\u063a\u0629 C++\u060c \u0627\u0644\u0645\u062a\u063a\u064a\u0631 \u0627\u0644\u062b\u0627\u0628\u062a \u0647\u0648 \u0645\u062a\u063a\u064a\u0631 \u0644\u0627 \u064a\u0645\u0643\u0646 \u062a\u063a\u064a\u064a\u0631 \u0642\u064a\u0645\u062a\u0647 \u0628\u0645\u062c\u0631\u062f \u062a\u0647\u064a\u0626\u062a\u0647. \u062a\u0638\u0644 \u0627\u0644\u0642\u064a\u0645\u0629 \u062b\u0627\u0628\u062a\u0629 \u0637\u0648\u0627\u0644 \u062a\u0646\u0641\u064a\u0630 \u0627\u0644\u0628\u0631\u0646\u0627\u0645\u062c. \u064a\u062a\u0645 \u0627\u0644\u0625\u0639\u0644\u0627\u0646 \u0639\u0646 \u0627\u0644\u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0643\u0644\u0645\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 const.<\/p>\n<h1>\u062b\u0627\u0628\u062a \u0627\u0644\u0643\u0627\u0626\u0646 Constant Object<\/h1>\n<ul>\n<li>\u0627\u0644\u0625\u0639\u0644\u0627\u0646: \u064a\u062a\u0645 \u0627\u0644\u0625\u0639\u0644\u0627\u0646 \u0639\u0646 \u0643\u0627\u0626\u0646 \u062b\u0627\u0628\u062a \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0643\u0644\u0645\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 const \u0645\u0639 \u0646\u0648\u0639 \u0627\u0644\u0643\u0627\u0626\u0646.<\/li>\n<li>\u063a\u064a\u0631 \u0642\u0627\u0628\u0644 \u0644\u0644\u062a\u063a\u064a\u064a\u0631: \u0628\u0645\u062c\u0631\u062f \u0625\u0639\u0644\u0627\u0646\u0647 \u0643\u0640 const\u060c \u0644\u0627 \u064a\u0645\u0643\u0646 \u062a\u063a\u064a\u064a\u0631 \u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0623\u0639\u0636\u0627\u0621 \u0627\u0644\u0643\u0627\u0626\u0646.<\/li>\n<li>\u0627\u0633\u062a\u062f\u0639\u0627\u0621 \u062f\u0648\u0627\u0644 \u0627\u0644\u0623\u0639\u0636\u0627\u0621: \u064a\u0645\u0643\u0646 \u0644\u0644\u0643\u0627\u0626\u0646 \u0627\u0644\u062b\u0627\u0628\u062a \u0641\u0642\u0637 \u0627\u0633\u062a\u062f\u0639\u0627\u0621 \u062f\u0648\u0627\u0644 \u0627\u0644\u0623\u0639\u0636\u0627\u0621 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0645\u0646 \u0641\u0626\u0627\u062a\u0647\u0627. \u0648\u0647\u0630\u0627 \u064a\u0645\u0646\u0639 \u0623\u064a\u0629 \u0639\u0645\u0644\u064a\u0627\u062a \u0642\u062f \u062a\u0624\u062f\u064a \u0625\u0644\u0649 \u062a\u0639\u062f\u064a\u0644 \u0627\u0644\u062d\u0627\u0644\u0629 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u0629 \u0644\u0644\u0643\u0627\u0626\u0646.<\/li>\n<\/ul>\n<h1>\u062f\u0627\u0644\u0629 \u0627\u0644\u0639\u0636\u0648 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 Constant Member Function<\/h1>\n<ul>\n<li>\u0627\u0644\u0625\u0639\u0644\u0627\u0646: \u064a\u062a\u0645 \u0627\u0644\u0625\u0639\u0644\u0627\u0646 \u0639\u0646 \u062f\u0627\u0644\u0629 \u0627\u0644\u0639\u0636\u0648 \u0639\u0644\u0649 \u0623\u0646\u0647\u0627 \u062b\u0627\u0628\u062a\u0629 \u0639\u0646 \u0637\u0631\u064a\u0642 \u0625\u0644\u062d\u0627\u0642 \u0627\u0644\u0643\u0644\u0645\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629 const \u0628\u0625\u0639\u0644\u0627\u0646\u0647\u0627 \u0648\u062a\u0639\u0631\u064a\u0641\u0647\u0627.<\/li>\n<li>\u0636\u0645\u0627\u0646 \u0639\u062f\u0645 \u0627\u0644\u062a\u0639\u062f\u064a\u0644: \u062a\u0636\u0645\u0646 \u062f\u0627\u0644\u0629 \u0627\u0644\u0639\u0636\u0648 \u0627\u0644\u062b\u0627\u0628\u062a \u0636\u0645\u0646\u064a\u064b\u0627 \u0628\u0639\u062f\u0645 \u062a\u0639\u062f\u064a\u0644 \u0623\u064a \u0645\u0646 \u0623\u0639\u0636\u0627\u0621 \u0627\u0644\u0628\u064a\u0627\u0646\u0627\u062a \u063a\u064a\u0631 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0641\u064a \u0641\u0626\u062a\u0647\u0627.<\/li>\n<li>\u0641\u0631\u0636 \u0627\u0644\u0635\u062d\u0629: \u0648\u0647\u0630\u0627 \u064a\u0633\u0627\u0639\u062f \u0627\u0644\u0645\u062a\u0631\u062c\u0645 \u0639\u0644\u0649 \u0641\u0631\u0636 \u0627\u0644\u0635\u062d\u0629 \u0648\u064a\u0645\u0646\u0639 \u0627\u0644\u0622\u062b\u0627\u0631 \u0627\u0644\u062c\u0627\u0646\u0628\u064a\u0629 \u063a\u064a\u0631 \u0627\u0644\u0645\u0642\u0635\u0648\u062f\u0629.<\/li>\n<\/ul>\n<h1>\u0645\u062b\u0627\u0644<\/h1>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">#include &lt;iostream&gt;\r\nusing namespace std;\r\nclass time {\r\n    private:\r\n        int h, m, s;\r\n    public:\r\n        void print() const \/\/constant function\r\n        {\r\n            cout &lt;&lt; \"Time = \" &lt;&lt; h &lt;&lt; \":\" &lt;&lt; m &lt;&lt; s &lt;&lt; endl;\r\n        }\r\n        time(int i, int j, int k)\r\n        {\r\n            h = i;\r\n            m = j;\r\n            s = k;\r\n        }\r\n};\r\nint main()\r\n{\r\n    const time noon(12, 0, 0); \/\/constant object\r\n    noon.print();\r\n\r\n    return 0;\r\n}<\/pre>\n<p>\u0641\u064a \u0627\u0644\u0643\u0648\u062f \u0627\u0644\u0645\u0642\u062f\u0645\u060c \u062a\u0644\u0639\u0628 \u0643\u0644 \u0645\u0646 \u0627\u0644\u062f\u0648\u0627\u0644 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0648\u0627\u0644\u0643\u0627\u0626\u0646\u0627\u062a \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0623\u062f\u0648\u0627\u0631\u064b\u0627 \u0645\u0647\u0645\u0629:<\/p>\n<p><strong>\u0627\u0644\u062f\u0627\u0644\u0629 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 (print() const):<\/strong><\/p>\n<ul>\n<li>\u062a\u0645 \u062a\u0639\u0631\u064a\u0641 \u062f\u0627\u0644\u0629 \u0627\u0644\u0639\u0636\u0648 print() \u0639\u0644\u0649 \u0623\u0646\u0647\u0627 const\u060c \u0645\u0645\u0627 \u064a\u062c\u0639\u0644\u0647\u0627 \u062f\u0627\u0644\u0629 \u0639\u0636\u0648 \u062b\u0627\u0628\u062a\u0629.<\/li>\n<li>\u062a\u0636\u0645\u0646 \u062f\u0627\u0644\u0629 \u0627\u0644\u0639\u0636\u0648 \u0627\u0644\u062b\u0627\u0628\u062a \u0639\u062f\u0645 \u062a\u0639\u062f\u064a\u0644 \u062d\u0627\u0644\u0629 \u0627\u0644\u0643\u0627\u0626\u0646 \u0627\u0644\u0630\u064a \u064a\u062a\u0645 \u0627\u0633\u062a\u062f\u0639\u0627\u0624\u0647 \u0639\u0644\u064a\u0647. \u064a\u0639\u062f \u0628\u0639\u062f\u0645 \u062a\u0639\u062f\u064a\u0644 \u0623\u064a \u0645\u062a\u063a\u064a\u0631\u0627\u062a \u0623\u0639\u0636\u0627\u0621 \u063a\u064a\u0631 \u062b\u0627\u0628\u062a\u0629 \u0644\u0644\u0641\u0626\u0629.<\/li>\n<li>\u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u0643\u0648\u062f\u060c \u062a\u0643\u0648\u0646 \u0627\u0644\u062f\u0627\u0644\u0629 print() \u0645\u0633\u0624\u0648\u0644\u0629 \u0639\u0646 \u0639\u0631\u0636 \u0627\u0644\u0648\u0642\u062a \u0627\u0644\u0645\u062e\u0632\u0646 \u0641\u064a \u0643\u0627\u0626\u0646 \u0627\u0644\u0648\u0642\u062a. \u0646\u0638\u0631\u064b\u0627 \u0644\u0623\u0646\u0647 \u0644\u0627 \u064a\u0639\u062f\u0644 \u062d\u0627\u0644\u0629 \u0627\u0644\u0643\u0627\u0626\u0646\u060c \u064a\u062a\u0645 \u062a\u0639\u0631\u064a\u0641\u0647 \u0639\u0644\u0649 \u0623\u0646\u0647 const.<\/li>\n<li>\u0645\u0646 \u062e\u0644\u0627\u0644 \u0627\u0644\u0625\u0639\u0644\u0627\u0646 \u0639\u0646 print()\u200e \u0643\u062f\u0627\u0644\u0629 \u0639\u0636\u0648 \u062b\u0627\u0628\u062a\u0629\u060c \u0641\u0625\u0646\u0647\u0627 \u062a\u0633\u0645\u062d \u0644\u0644\u0643\u0627\u0626\u0646\u0627\u062a \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0628\u0627\u0633\u062a\u062f\u0639\u0627\u0621 \u0647\u0630\u0647 \u0627\u0644\u062f\u0627\u0644\u0629.<\/li>\n<\/ul>\n<p><strong>\u0627\u0644\u0643\u0627\u0626\u0646 \u0627\u0644\u062b\u0627\u0628\u062a (const time noon(12, 0, 0)):<\/strong><\/p>\n<ul>\n<li>\u064a\u062a\u0645 \u0625\u0646\u0634\u0627\u0621 \u0643\u0627\u0626\u0646 \u064a\u0633\u0645\u0649 noon \u0644\u0644\u0640class time \u0648\u0625\u0639\u0644\u0627\u0646\u0647 \u0639\u0644\u0649 \u0623\u0646\u0647 const. \u0648\u0647\u0630\u0627 \u064a\u062c\u0639\u0644 noon \u0643\u0627\u0626\u0646\u064b\u0627 \u062b\u0627\u0628\u062a\u064b\u0627.<\/li>\n<li>\u0627\u0644\u0643\u0627\u0626\u0646 \u0627\u0644\u062b\u0627\u0628\u062a \u0647\u0648 \u0643\u0627\u0626\u0646 \u0644\u0627 \u064a\u0645\u0643\u0646 \u062a\u0639\u062f\u064a\u0644 \u062d\u0627\u0644\u062a\u0647 \u0628\u0639\u062f \u0627\u0644\u062a\u0647\u064a\u0626\u0629. \u0623\u064a \u0645\u062d\u0627\u0648\u0644\u0629 \u0644\u062a\u0639\u062f\u064a\u0644 \u062d\u0627\u0644\u062a\u0647 \u0633\u062a\u0624\u062f\u064a \u0625\u0644\u0649 \u062e\u0637\u0623 \u0641\u064a \u0627\u0644\u062a\u0631\u062c\u0645\u0629.<\/li>\n<li>\u0641\u064a \u0647\u0630\u0627 \u0627\u0644\u0643\u0648\u062f\u060c \u064a\u0645\u062b\u0644 \u0643\u0627\u0626\u0646 noon \u0648\u0642\u062a\u064b\u0627 \u0645\u062d\u062f\u062f\u064b\u0627\u060c 12:00:00\u060c \u0648\u0644\u0627 \u064a\u0645\u0643\u0646 \u062a\u063a\u064a\u064a\u0631\u0647 \u0628\u0645\u062c\u0631\u062f \u0625\u0646\u0634\u0627\u0626\u0647.<\/li>\n<li>\u062a\u0643\u0648\u0646 \u0627\u0644\u0643\u0627\u0626\u0646\u0627\u062a \u0627\u0644\u062b\u0627\u0628\u062a\u0629 \u0645\u0641\u064a\u062f\u0629 \u0639\u0646\u062f\u0645\u0627 \u062a\u0631\u064a\u062f \u0627\u0644\u062a\u0623\u0643\u062f \u0645\u0646 \u0628\u0642\u0627\u0621 \u062d\u0627\u0644\u0629 \u0627\u0644\u0643\u0627\u0626\u0646 \u062f\u0648\u0646 \u062a\u063a\u064a\u064a\u0631 \u0637\u0648\u0627\u0644 \u0639\u0645\u0631\u0647\u060c \u0645\u0645\u0627 \u064a\u0648\u0641\u0631 \u0636\u0645\u0627\u0646\u0627\u062a \u0628\u0627\u0644\u062b\u0628\u0627\u062a \u0648\u0627\u0644\u0623\u0645\u0627\u0646.<\/li>\n<li>\u0645\u0646 \u062e\u0644\u0627\u0644 \u0627\u0644\u0625\u0639\u0644\u0627\u0646 \u0639\u0646 noon \u0643\u0643\u0627\u0626\u0646 \u062b\u0627\u0628\u062a\u060c \u0641\u0625\u0646\u0647 \u064a\u0636\u0645\u0646 \u0625\u0645\u0643\u0627\u0646\u064a\u0629 \u0627\u0633\u062a\u062f\u0639\u0627\u0621 \u0627\u0644\u062f\u0627\u0644\u0629 print()\u060c \u0648\u0627\u0644\u062a\u064a \u062a\u0645 \u0648\u0636\u0639 \u0639\u0644\u0627\u0645\u0629 \u0639\u0644\u064a\u0647\u0627 \u0623\u064a\u0636\u064b\u0627 \u0639\u0644\u0649 \u0623\u0646\u0647\u0627 const\u060c \u0639\u0644\u064a\u0647. \u064a\u0633\u0645\u062d \u0647\u0630\u0627 \u0644\u0644\u062f\u0627\u0644\u0629 print() \u0628\u0627\u0644\u0648\u0635\u0648\u0644 \u0625\u0644\u0649 \u062d\u0627\u0644\u0629 \u0643\u0627\u0626\u0646 \u0627\u0644\u0638\u0647\u064a\u0631\u0629 \u062f\u0648\u0646 \u062e\u0648\u0641 \u0645\u0646 \u0627\u0644\u062a\u0639\u062f\u064a\u0644.<\/li>\n<\/ul>\n<p>\u0628\u0627\u062e\u062a\u0635\u0627\u0631\u060c \u062a\u0636\u0645\u0646 \u0627\u0644\u062f\u0627\u0644\u0629 \u0627\u0644\u062b\u0627\u0628\u062a\u0629 (print() const) \u0639\u062f\u0645 \u062a\u0639\u062f\u064a\u0644 \u062d\u0627\u0644\u0629 \u0627\u0644\u0643\u0627\u0626\u0646\u060c \u0648\u064a\u0636\u0645\u0646 \u0627\u0644\u0643\u0627\u0626\u0646 \u0627\u0644\u062b\u0627\u0628\u062a (const time noon(12, 0, 0)) \u0628\u0642\u0627\u0621 \u062d\u0627\u0644\u062a\u0647 \u062f\u0648\u0646 \u062a\u063a\u064a\u064a\u0631 \u0637\u0648\u0627\u0644 \u062d\u064a\u0627\u062a\u0647. \u062a\u0639\u0645\u0644 \u0647\u0630\u0647 \u0627\u0644\u0645\u0641\u0627\u0647\u064a\u0645 \u0645\u0639\u064b\u0627 \u0644\u0641\u0631\u0636 \u0627\u0644\u062b\u0628\u0627\u062a \u0648\u0627\u0644\u0633\u0644\u0627\u0645\u0629 \u0641\u064a \u0627\u0644\u0643\u0648\u062f.<\/p>","protected":false},"excerpt":{"rendered":"<p>Introduction In C++, a constant variable is a variable whose value cannot be changed once it has been initialized. The value remains constant throughout the execution of the program. Constant variables are declared using the const keyword. Constant Object Declaration: A constant object is declared by using the const keyword along with the object&#8217;s type. 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