{"id":14219,"date":"2024-03-15T21:27:46","date_gmt":"2024-03-15T12:27:46","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/bitset%e3%81%aec%e3%81%a7%e3%81%ae%e4%bd%bf%e7%94%a8%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/"},"modified":"2025-08-05T20:53:17","modified_gmt":"2025-08-05T11:53:17","slug":"bitset%e3%81%aec%e3%81%a7%e3%81%ae%e4%bd%bf%e7%94%a8%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/bitset%e3%81%aec%e3%81%a7%e3%81%ae%e4%bd%bf%e7%94%a8%e6%b3%95%e3%81%af%e4%bd%95%e3%81%a7%e3%81%99%e3%81%8b%ef%bc%9f\/","title":{"rendered":"bitset\u306eC++\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f"},"content":{"rendered":"

C++\u306e\u4e2d\u3067\u3001std::bitset\u306f\u30d3\u30c3\u30c8\u64cd\u4f5c\u3092\u6271\u3046\u305f\u3081\u306e\u30d3\u30c3\u30c8\u30bb\u30c3\u30c8\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u56fa\u5b9a\u9577\u306e\u30d3\u30c3\u30c8\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u683c\u7d0d\u304a\u3088\u3073\u64cd\u4f5c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

std::bitset\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a<\/p>\n

    \n
  1. \u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb: std::bitset\u3092\u4f7f\u7528\u3059\u308b\u306b\u306f\u3001\u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb\u3092\u542b\u3081\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n
  2. \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u4f5c\u6210\uff1astd::bitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306f\u4ee5\u4e0b\u306e\u65b9\u6cd5\u3067\u4f5c\u6210\u3067\u304d\u307e\u3059\u3002
    \nstd::bitset var; \/\/ N\u30d3\u30c3\u30c8\u306ebitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u3059\u3079\u3066\u306e\u30d3\u30c3\u30c8\u304c\u30c7\u30d5\u30a9\u30eb\u30c8\u30670\u306b\u8a2d\u5b9a\u3055\u308c\u307e\u3059
    \nstd::bitset var(value); \/\/ N\u30d3\u30c3\u30c8\u306ebitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u4e0e\u3048\u3089\u308c\u305f\u6574\u6570\u5024\u3067\u521d\u671f\u5316\u3057\u307e\u3059
    \nstd::bitset var(string); \/\/ N\u30d3\u30c3\u30c8\u306ebitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u4e0e\u3048\u3089\u308c\u305f2\u9032\u6587\u5b57\u5217\u3067\u521d\u671f\u5316\u3057\u307e\u3059<\/li>\n
  3. N\u306fbitset\u306e\u9577\u3055\u3092\u8868\u3059\u3002<\/li>\n
  4. bitset\u5185\u306e\u30d3\u30c3\u30c8\u3092\u30a2\u30af\u30bb\u30b9\u304a\u3088\u3073\u5909\u66f4\u3059\u308b\u306b\u306f\u3001[]\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002
    \nvar[pos] = value; \/\/ \u30d3\u30c3\u30c8pos\u3092value\u306b\u8a2d\u5b9a\u3057\u307e\u3059
    \nvalue = var[pos]; \/\/ \u30d3\u30c3\u30c8pos\u306e\u5024\u3092\u53d6\u5f97\u3057\u307e\u3059<\/li>\n
  5. \u30e1\u30f3\u30d0\u95a2\u6570\uff1astd::bitset\u306b\u306f\u3001\u30d3\u30c3\u30c8\u64cd\u4f5c\u3092\u884c\u3046\u305f\u3081\u306e\u3044\u304f\u3064\u304b\u306e\u30e1\u30f3\u30d0\u95a2\u6570\u3082\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\uff1a<\/li>\n
  6. size()\u30e1\u30bd\u30c3\u30c9\uff1abitset\u306e\u9577\u3055\u3092\u8fd4\u3059\u3002<\/li>\n
  7. count()\uff1a\u30d3\u30c3\u30c8\u30bb\u30c3\u30c8\u5185\u3067\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30d3\u30c3\u30c8\u304c1\u306e\u6570\u3092\u8fd4\u3059\u3002<\/li>\n
  8. any()\uff1abitset\u306b\u5c11\u306a\u304f\u3068\u30821\u3064\u306e\u30d3\u30c3\u30c8\u304c1\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n
  9. none()\uff1abitset\u306e\u3059\u3079\u3066\u306e\u30d3\u30c3\u30c8\u304c0\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n
  10. all()\u30e1\u30bd\u30c3\u30c9: \u30d3\u30c3\u30c8\u30bb\u30c3\u30c8\u5185\u306e\u3059\u3079\u3066\u306e\u30d3\u30c3\u30c8\u304c1\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/li>\n
  11. flip()\u30e1\u30bd\u30c3\u30c9\uff1a\u30d3\u30c3\u30c8\u30bb\u30c3\u30c8\u5185\u306e\u5168\u3066\u306e\u30d3\u30c3\u30c8\u3092\u53cd\u8ee2\u3055\u305b\u308b\u3002<\/li>\n
  12. reset()\uff1abitset\u5185\u306e\u5168\u3066\u306e\u30d3\u30c3\u30c8\u30920\u306b\u30ea\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002<\/li>\n
  13. set()\uff1a\u3059\u3079\u3066\u306e\u30d3\u30c3\u30c8\u30921\u306b\u8a2d\u5b9a\u3057\u307e\u3059\u3002<\/li>\n
  14. test(pos)\uff1apos\u304c1\u306b\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n
  15. \u30d3\u30c3\u30c8\u6f14\u7b97\uff1astd::bitset\u306f\u3001\u30d3\u30c3\u30c8AND\u3001OR\u3001XOR\u306a\u3069\u306e\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3082\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\uff1a<\/li>\n
  16. &\uff1a\u30d3\u30c3\u30c8\u6f14\u7b97\u5b50\u3002<\/li>\n
  17. \u30d3\u30c3\u30c8\u5358\u4f4d\u306e\u8ad6\u7406\u548c\u6f14\u7b97\u5b50\u3002<\/li>\n
  18. ^\uff1a\u30d3\u30c3\u30c8\u5358\u4f4d\u306e\u6392\u4ed6\u7684\u8ad6\u7406\u548c\u6f14\u7b97\u5b50\u3002<\/li>\n
  19. \u301c\uff1a\u30d3\u30c3\u30c8\u5358\u4f4d\u306e\u88dc\u6570\u6f14\u7b97\u5b50\u3002<\/li>\n
  20. std::bitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u30d0\u30a4\u30ca\u30ea\u6587\u5b57\u5217\u306b\u5909\u63db\u3059\u308b\u305f\u3081\u306b\u306f\u3001to_string()\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001std::bitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306ecout\u51fa\u529b\u6f14\u7b97\u5b50\u3092\u4f7f\u7528\u3057\u3066\u51fa\u529b\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u4ee5\u4e0b\u306f\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n

    #include<\/span> <bitset><\/span><\/span>\r\n#include<\/span> <iostream><\/span><\/span>\r\n\r\nint<\/span> main<\/span>()<\/span> <\/span>{\r\n    std::bitset<8> bits; \/\/ \u521b\u5efa\u4e00\u4e2a\u957f\u5ea6\u4e3a8\u7684bitset\u5bf9\u8c61\uff0c\u9ed8\u8ba4\u6240\u6709\u4f4d\u90fd\u8bbe\u7f6e\u4e3a0<\/span>\r\n    std::cout << bits << std::endl; \/\/ \u8f93\u51fa: 00000000<\/span>\r\n\r\n    bits.set<\/span>(3<\/span>); \/\/ \u5c06\u4f4d3\u8bbe\u7f6e\u4e3a1<\/span>\r\n    std::cout << bits << std::endl; \/\/ \u8f93\u51fa: 00001000<\/span>\r\n\r\n    bits.flip<\/span>(); \/\/ \u7ffb\u8f6c\u6240\u6709\u4f4d<\/span>\r\n    std::cout << bits << std::endl; \/\/ \u8f93\u51fa: 11110111<\/span>\r\n\r\n    bits.reset<\/span>(); \/\/ \u5c06\u6240\u6709\u4f4d\u91cd\u7f6e\u4e3a0<\/span>\r\n    std::cout << bits << std::endl; \/\/ \u8f93\u51fa: 00000000<\/span>\r\n\r\n    return<\/span> 0<\/span>;\r\n}\r\n<\/code><\/pre>\n
    \u4e0a\u8a18\u306e\u30b3\u30fc\u30c9\u306f\u3001\u30b5\u30a4\u30ba\u304c8\u306ebitset\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u306e\u30d3\u30c3\u30c8\u306b\u5bfe\u3057\u3066\u3044\u304f\u3064\u304b\u306e\u64cd\u4f5c\u3092\u5b9f\u884c\u3057\u3001\u7d50\u679c\u3092\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    C++\u306e\u4e2d\u3067\u3001std::bitset\u306f\u30d3\u30c3\u30c8\u64cd\u4f5c\u3092\u6271\u3046\u305f\u3081\u306e\u30d3\u30c3\u30c8\u30bb\u30c3\u30c8\u30af\u30e9\u30b9\u3067\u3042\u308a\u3001\u56fa\u5b9a\u9577\u306e\u30d3\u30c3\u30c8\u30b7\u30fc\u30b1\u30f3\u30b9\u3092\u683c\u7d0d\u304a\u3088\u3073\u64cd\u4f5c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 std::bitset\u306e\u4f7f\u7528\u65b9\u6cd5\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\uff1a \u30d8\u30c3\u30c0\u30fc\u30d5\u30a1\u30a4\u30eb:  […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-14219","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nbitset\u306eC++\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"bitset\u306eC++\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\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\/ja\/blog\/bitset\u306ec\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"bitset\u306eC++\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\" \/>\n<meta property=\"og:description\" content=\"bitset\u306eC++\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/bitset\u306ec\u3067\u306e\u4f7f\u7528\u6cd5\u306f\u4f55\u3067\u3059\u304b\uff1f\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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