{"id":21196,"date":"2024-03-15T21:38:46","date_gmt":"2024-03-15T21:38:46","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/"},"modified":"2024-03-21T19:54:35","modified_gmt":"2024-03-21T19:54:35","slug":"how-to-put-the-content-of-a-file-into-an-array-in-c","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/","title":{"rendered":"How to put the content of a file into an array in C++?"},"content":{"rendered":"

You can read the content of the file into an array using the following steps:<\/p>\n

    \n
  1. Open the file:<\/li>\n<\/ol>\n
    #include<\/span> <fstream><\/span><\/span>\r\n\r\nstd::ifstream file<\/span>(\"filename.txt\"<\/span>)<\/span><\/span>;\r\n<\/code><\/pre>\n
      \n
    1. Check if the file was successfully opened.<\/li>\n<\/ol>\n
      if<\/span> (!file.is_open<\/span>()) {\r\n    \/\/ \u6587\u4ef6\u6253\u5f00\u5931\u8d25<\/span>\r\n    return<\/span>;\r\n}\r\n<\/code><\/pre>\n
        \n
      1. Create an array to store the content of the files.<\/li>\n<\/ol>\n
        const<\/span> int<\/span> MAX_SIZE = 100<\/span>; \/\/ \u6570\u7ec4\u7684\u6700\u5927\u5927\u5c0f<\/span>\r\nint<\/span> arr[MAX_SIZE];\r\nint<\/span> count = 0<\/span>; \/\/ \u8bb0\u5f55\u6570\u7ec4\u4e2d\u5143\u7d20\u7684\u4e2a\u6570<\/span>\r\n<\/code><\/pre>\n
          \n
        1. Read the file content in a loop and store it in an array.<\/li>\n<\/ol>\n
          int<\/span> num;\r\nwhile<\/span> (file >> num) {\r\n    arr[count] = num;\r\n    count++;\r\n    if<\/span> (count >= MAX_SIZE) {\r\n        \/\/ \u6570\u7ec4\u5df2\u6ee1\uff0c\u65e0\u6cd5\u7ee7\u7eed\u8bfb\u53d6<\/span>\r\n        break<\/span>;\r\n    }\r\n}\r\n<\/code><\/pre>\n
            \n
          1. Close the file.<\/li>\n<\/ol>\n
            file.close<\/span>();\r\n<\/code><\/pre>\n
            Complete code example:<\/p>\n
            #include<\/span> <iostream><\/span><\/span>\r\n#include<\/span> <fstream><\/span><\/span>\r\n\r\nconst<\/span> int<\/span> MAX_SIZE = 100<\/span>; \/\/ \u6570\u7ec4\u7684\u6700\u5927\u5927\u5c0f<\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> <\/span>{\r\n    std::ifstream file<\/span>(\"filename.txt\"<\/span>)<\/span><\/span>;\r\n    if<\/span> (!file.is_open<\/span>()) {\r\n        std::cout << \"\u6587\u4ef6\u6253\u5f00\u5931\u8d25\"<\/span> << std::endl;\r\n        return<\/span> 0<\/span>;\r\n    }\r\n\r\n    int<\/span> arr[MAX_SIZE];\r\n    int<\/span> count = 0<\/span>;\r\n\r\n    int<\/span> num;\r\n    while<\/span> (file >> num) {\r\n        arr[count] = num;\r\n        count++;\r\n        if<\/span> (count >= MAX_SIZE) {\r\n            std::cout << \"\u6570\u7ec4\u5df2\u6ee1\uff0c\u65e0\u6cd5\u7ee7\u7eed\u8bfb\u53d6\"<\/span> << std::endl;\r\n            break<\/span>;\r\n        }\r\n    }\r\n\r\n    file.close<\/span>();\r\n\r\n    \/\/ \u6253\u5370\u6570\u7ec4\u4e2d\u7684\u5185\u5bb9<\/span>\r\n    for<\/span> (int<\/span> i = 0<\/span>; i < count; i++) {\r\n        std::cout << arr[i] << \" \"<\/span>;\r\n    }\r\n    std::cout << std::endl;\r\n\r\n    return<\/span> 0<\/span>;\r\n}\r\n<\/code><\/pre>\n
            Please make sure to replace “filename.txt” with the actual file name and create the file in the same directory.<\/p>\n","protected":false},"excerpt":{"rendered":"
            You can read the content of the file into an array using the following steps: Open the file: #include <fstream> std::ifstream file(“filename.txt”); Check if the file was successfully opened. if (!file.is_open()) { \/\/ \u6587\u4ef6\u6253\u5f00\u5931\u8d25 return; } Create an array to store the content of the files. const int MAX_SIZE = 100; \/\/ \u6570\u7ec4\u7684\u6700\u5927\u5927\u5c0f int arr[MAX_SIZE]; […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-21196","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nHow to put the content of a file into an array in C++? - Blog - Silicon Cloud<\/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:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to put the content of a file into an array in C++?\" \/>\n<meta property=\"og:description\" content=\"You can read the content of the file into an array using the following steps: Open the file: #include <fstream> std::ifstream file("filename.txt"); Check if the file was successfully opened. if (!file.is_open()) { \/\/ \u6587\u4ef6\u6253\u5f00\u5931\u8d25 return; } Create an array to store the content of the files. const int MAX_SIZE = 100; \/\/ \u6570\u7ec4\u7684\u6700\u5927\u5927\u5c0f int arr[MAX_SIZE]; […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/SiliCloudGlobal\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-15T21:38:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-21T19:54:35+00:00\" \/>\n<meta name=\"author\" content=\"Olivia Parker\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:site\" content=\"@SiliCloudGlobal\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Olivia Parker\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/\"},\"author\":{\"name\":\"Olivia Parker\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/#\/schema\/person\/3ff7b3da0e45ac5dbbef2502f3cea8d9\"},\"headline\":\"How to put the content of a file into an array in C++?\",\"datePublished\":\"2024-03-15T21:38:46+00:00\",\"dateModified\":\"2024-03-21T19:54:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/\"},\"wordCount\":87,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/www.silicloud.com\/blog\/#organization\"},\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/\",\"url\":\"https:\/\/www.silicloud.com\/blog\/how-to-put-the-content-of-a-file-into-an-array-in-c\/\",\"name\":\"How to put the content of a file into an array in C++? 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