{"id":127136,"date":"2023-11-30T15:30:23","date_gmt":"2023-11-30T10:00:23","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=127136"},"modified":"2023-11-30T15:30:23","modified_gmt":"2023-11-30T10:00:23","slug":"how-to-use-read-and-write-methods-in-cpp","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/how-to-use-read-and-write-methods-in-cpp\/","title":{"rendered":"How to Use Read and Write Methods in C++"},"content":{"rendered":"<h3>Program 1<\/h3>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\">\/\/ read write method (How to store object in file)\r\n#include&lt;iostream&gt;\r\n#include&lt;fstream&gt;\r\n#define clrscr() system(\"cls\")\r\nusing namespace std;\r\nclass Employee\r\n{\r\n    private :\r\n    int empid;\r\n    char name[20];\r\n    char dname[20];\r\n    int salary;\r\n    public:\r\n    void getdata()\r\n    {\r\n        cout&lt;&lt;\"\\nEnter a id: \";\r\n        cin&gt;&gt;empid;\r\n        cout&lt;&lt;\"\\n Enter Name: \";\r\n        cin&gt;&gt;name;\r\n        cout&lt;&lt;\"\\n Enter Department Name: \";\r\n        cin&gt;&gt;dname;\r\n        cout&lt;&lt;\"\\n Enter Salary: \";\r\n       cin&gt;&gt;salary;\r\n    }\r\n    void showdata()\r\n    {\r\n        cout&lt;&lt;\"\\n Emp Id:\"&lt;&lt;empid;\r\n        cout&lt;&lt;\" Emp Name: \"&lt;&lt;name;\r\n        cout&lt;&lt;\" Department Name: \"&lt;&lt;dname;\r\n        cout&lt;&lt;\" Salary: \"&lt;&lt;salary;\r\n        cout&lt;&lt;\"\\n\";\r\n    }\r\n};\r\nclass Emp_File\r\n{\r\n    private:\r\n    Employee buffer;\r\n    public:\r\n    void diskin();\r\n    void diskout();\r\n};\r\nvoid Emp_File::diskin()\r\n{\r\n    fstream fout(\"g:\/\/cppdata\/empinfo.txt\",ios::app);\r\n    if(fout.is_open())\r\n    {\r\n        char ch;\r\n     do\r\n     {\r\n        buffer.getdata();  \/\/ data read\r\n        fout.write((char*)&amp;buffer, sizeof(buffer));  \/\/ Write object\r\n        cout&lt;&lt;\"\\n Want to continue\";\r\n        cin&gt;&gt;ch;\r\n     }while(ch=='y' || ch=='Y');\r\n\r\n        fout.close(); \/\/close file\r\n    }\r\n    else\r\n    cout&lt;&lt;\"File error\";\r\n}\r\n\r\n\r\nvoid Emp_File::diskout()\r\n{\r\n    fstream fin(\"g:\/\/cppdata\/empinfo.txt\",ios::in);  \/\/ open file in read mode\r\n    if(fin.is_open())\r\n     {\r\n        fin.read((char*) &amp; buffer,sizeof(buffer)); \r\n        while(fin)       \r\n        { \r\n          buffer.showdata();  \/\/display data \r\n          fin.read((char*) &amp; buffer,sizeof(buffer));  \/\/ read object\r\n       }\r\n\r\n        fin.close(); \/\/ close\r\n    }\r\n    else\r\n    cout&lt;&lt;\"File error\";\r\n}\r\n\r\n\r\nint main()\r\n{\r\n    int choice;\r\n    Emp_File ef;\r\n    clrscr();\r\n    do\r\n    {\r\n    cout&lt;&lt;\"\\n-----------------File Menu---------------\";\r\n    cout&lt;&lt;\"\\n 1. Write Data \\n 2 Read Data\\n 3.Exit\";\r\n    cout&lt;&lt;\"\\n-----------------------------------------\";\r\n    cout&lt;&lt;\"\\nEnter your choice\";\r\n    cin&gt;&gt;choice;\r\n    switch(choice)\r\n    {\r\n          case 1:ef.diskin();break;\r\n          case 2: ef.diskout();break;\r\n          case 3: break;\r\n          default:cout&lt;&lt;\"\\n Invalid chioce\";\r\n\r\n    }\r\n    }while(choice!=3);\r\n\r\n    return 0;\r\n}<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Program 1 \/\/ read write method (How to store object in file) #include&lt;iostream&gt; #include&lt;fstream&gt; #define clrscr() system(&#8220;cls&#8221;) using namespace std; class Employee { private : int empid; char name[20]; char dname[20]; int salary; public:&#46;&#46;&#46;<\/p>\n","protected":false},"author":86671,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20172],"tags":[2263,29219,29218,29706,29705,29707],"class_list":["post-127136","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-c","tag-c-practical","tag-c-program","tag-c-read-and-write-methods","tag-how-to-use-read-and-write-methods-in-c","tag-read-and-write-methods-in-c"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Use Read and Write Methods in C++ - DataFlair<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/data-flair.training\/blogs\/how-to-use-read-and-write-methods-in-cpp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Use Read and Write Methods in C++ - DataFlair\" \/>\n<meta property=\"og:description\" content=\"Program 1 \/\/ read write method (How to store object in file) #include&lt;iostream&gt; #include&lt;fstream&gt; #define clrscr() system(&quot;cls&quot;) using namespace std; class Employee { private : int empid; char name[20]; char dname[20]; int salary; public:&#046;&#046;&#046;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/data-flair.training\/blogs\/how-to-use-read-and-write-methods-in-cpp\/\" \/>\n<meta property=\"og:site_name\" content=\"DataFlair\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DataFlairWS\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-30T10:00:23+00:00\" \/>\n<meta name=\"author\" content=\"TechVidvan Team\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:site\" content=\"@DataFlairWS\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"TechVidvan Team\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"How to Use Read and Write Methods in C++ - DataFlair","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/data-flair.training\/blogs\/how-to-use-read-and-write-methods-in-cpp\/","og_locale":"en_US","og_type":"article","og_title":"How to Use Read and Write Methods in C++ - DataFlair","og_description":"Program 1 \/\/ read write method (How to store object in file) #include&lt;iostream&gt; 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