{"id":74987,"date":"2026-02-11T07:05:08","date_gmt":"2026-02-10T23:05:08","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/74987.html"},"modified":"2026-02-11T07:05:08","modified_gmt":"2026-02-10T23:05:08","slug":"%ef%bc%88%e5%ad%a6%e4%b9%a0%e7%ac%94%e8%ae%b0%ef%bc%892-1-%e4%bf%a1%e6%81%af%e5%ad%98%e5%82%a8%ef%bc%882-1-2-%e5%ad%97%e6%95%b0%e6%8d%ae%e5%a4%a7%e5%b0%8f%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/74987.html","title":{"rendered":"\uff08\u5b66\u4e60\u7b14\u8bb0\uff092.1 \u4fe1\u606f\u5b58\u50a8\uff082.1.2 \u5b57\u6570\u636e\u5927\u5c0f\uff09"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\u7ebf\u7d22\u680f<\/li>\n<li>\u7b14\u8bb0\u680f<\/li>\n<li>\n<ul>\n<li>2.1.2 \u5b57\u6570\u636e\u5927\u5c0f<\/li>\n<li>\n<ul>\n<li>1. \u5b57\u957f\u4e0e\u865a\u62df\u5730\u5740\u7a7a\u95f4<\/li>\n<li>\n<ul>\n<li>1&#xff09;\u5b9a\u4e49<\/li>\n<li>2&#xff09;\u6838\u5fc3\u5f71\u54cd<\/li>\n<li>3&#xff09;32\u4f4d vs. 64\u4f4d\u8fc1\u79fb<\/li>\n<\/ul>\n<\/li>\n<li>2. C\u8bed\u8a00\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f&#xff08;\u8be6\u89c1\u56fe2-3\u8868\u683c&#xff09;<\/li>\n<li>\n<ul>\n<li>1&#xff09;\u5927\u5c0f\u4f9d\u8d56<\/li>\n<li>2&#xff09;\u5178\u578b\u503c\u603b\u7ed3<\/li>\n<li>3&#xff09;\u7b26\u53f7\u6027<\/li>\n<\/ul>\n<\/li>\n<li>3. \u53ef\u79fb\u690d\u6027\u4e0e\u786e\u5b9a\u5927\u5c0f\u7684\u7c7b\u578b<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u603b\u7ed3\u680f<\/li>\n<\/ul>\n<hr \/>\n<h2>\u7ebf\u7d22\u680f<\/h2>\n<li>\u5b57\u957f\u662f\u4ec0\u4e48&#xff1f;\u5b83\u51b3\u5b9a\u4e86\u4ec0\u4e48\u81f3\u5173\u91cd\u8981\u7684\u7cfb\u7edf\u53c2\u6570&#xff1f;<\/li>\n<li>\u4ece32\u4f4d\u541164\u4f4d\u7cfb\u7edf\u7684\u8fc1\u79fb\u5e26\u6765\u4e86\u4ec0\u4e48\u6839\u672c\u6027\u53d8\u5316&#xff1f;\u865a\u62df\u5730\u5740\u7a7a\u95f4\u7684\u9650\u5236\u5206\u522b\u662f\u4ec0\u4e48&#xff1f;<\/li>\n<li>C\u8bed\u8a00\u57fa\u672c\u6570\u636e\u7c7b\u578b&#xff08;\u5982 int, long, \u6307\u9488&#xff09;\u7684\u5927\u5c0f\u7531\u4ec0\u4e48\u51b3\u5b9a&#xff1f;32\u4f4d\u4e0e64\u4f4d\u7a0b\u5e8f\u6709\u4f55\u5178\u578b\u5dee\u5f02&#xff1f;<\/li>\n<li>\u4e3a\u4ec0\u4e48C99\u6807\u51c6\u8981\u5f15\u5165int32_t\u3001int64_t\u8fd9\u7c7b\u56fa\u5b9a\u5927\u5c0f\u7684\u6574\u6570\u7c7b\u578b&#xff1f;<\/li>\n<li>\u5927\u591a\u6570\u6570\u636e\u7c7b\u578b\u7684\u201c\u7b26\u53f7\u6027\u201d\u5982\u4f55\u786e\u5b9a&#xff1f;char\u7c7b\u578b\u5728\u6b64\u65b9\u9762\u6709\u4f55\u7279\u6b8a\u6027&#xff1f;<\/li>\n<li>C\u8bed\u8a00\u4e2d\u6307\u9488\u53d8\u91cf\u7684\u5927\u5c0f\u662f\u591a\u5c11&#xff1f;<\/li>\n<li>\u5355\u7cbe\u5ea6 (float) \u548c\u53cc\u7cbe\u5ea6 (double) \u6d6e\u70b9\u6570\u901a\u5e38\u5404\u5360\u591a\u5c11\u5b57\u8282&#xff1f;<\/li>\n<hr \/>\n<h2>\u7b14\u8bb0\u680f<\/h2>\n<h3>2.1.2 \u5b57\u6570\u636e\u5927\u5c0f<\/h3>\n<p>\u6838\u5fc3\u6982\u5ff5&#xff1a;\u8ba1\u7b97\u673a\u7684\u5b57\u957f&#xff08;Word Size&#xff09;\u200b \u662f\u7cfb\u7edf\u7684\u4e00\u4e2a\u57fa\u672c\u53c2\u6570&#xff0c;\u5b83\u5b9a\u4e49\u4e86\u6307\u9488\u6570\u636e\u7684\u6807\u79f0\u5927\u5c0f&#xff0c;\u5e76\u6df1\u523b\u5f71\u54cd\u865a\u62df\u5730\u5740\u7a7a\u95f4\u7684\u5927\u5c0f\u548cC\u8bed\u8a00\u4e2d\u591a\u79cd\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f\u3002<\/p>\n<h4>1. \u5b57\u957f\u4e0e\u865a\u62df\u5730\u5740\u7a7a\u95f4<\/h4>\n<h5>1&#xff09;\u5b9a\u4e49<\/h5>\n<p>\u5b57\u957f\u6307\u660e\u4e86\u6307\u9488\u6570\u636e\u7684\u6807\u79f0\u5927\u5c0f\u3002<\/p>\n<h5>2&#xff09;\u6838\u5fc3\u5f71\u54cd<\/h5>\n<p>&#xff08;1&#xff09;\u56e0\u4e3a\u865a\u62df\u5730\u5740\u662f\u7528\u4e00\u4e2a\u5b57\u6765\u7f16\u7801\u7684&#xff0c;\u6240\u4ee5\u5b57\u957f\u51b3\u5b9a\u4e86\u865a\u62df\u5730\u5740\u7a7a\u95f4\u7684\u6700\u5927\u5927\u5c0f\u3002 &#xff08;2&#xff09;\u5bf9\u4e8e\u5b57\u957f\u4e3aw\u4f4d\u7684\u673a\u5668&#xff0c;\u865a\u62df\u5730\u5740\u8303\u56f4\u662f0\u52302<sup>w<\/sup>-1, \u7a0b\u5e8f\u6700\u591a\u53ef\u8bbf\u95ee2<sup>w<\/sup>\u5b57\u8282\u3002<\/p>\n<h5>3&#xff09;32\u4f4d vs. 64\u4f4d\u8fc1\u79fb<\/h5>\n<p>&#xff08;1&#xff09;32\u4f4d\u7cfb\u7edf&#xff1a;\u865a\u62df\u5730\u5740\u7a7a\u95f4\u9650\u5236\u4e3a2\u768432&#xff08;\u6b21\u65b9&#xff09;\u5b57\u8282 &#061; 4 GB\u3002 &#xff08;2&#xff09;64\u4f4d\u7cfb\u7edf&#xff1a;\u865a\u62df\u5730\u5740\u7a7a\u95f4\u9ad8\u8fbe 2\u768464&#xff08;\u6b21\u65b9&#xff09;\u5b57\u8282 &#061; 16 EB&#xff08;\u827e\u5b57\u8282&#xff09;\u3002\u8fd9\u662f\u4ece\u5927\u578b\u673a\u5230\u667a\u80fd\u624b\u673a\u7684\u666e\u904d\u8d8b\u52bf\u3002 &#xff08;3&#xff09;\u5411\u540e\u517c\u5bb9&#xff1a;\u5927\u591a\u657064\u4f4d\u673a\u5668\u53ef\u4ee5\u8fd0\u884c\u4e3a32\u4f4d\u7f16\u8bd1\u7684\u7a0b\u5e8f\u3002<\/p>\n<h4>2. C\u8bed\u8a00\u6570\u636e\u7c7b\u578b\u7684\u5927\u5c0f&#xff08;\u8be6\u89c1\u56fe2-3\u8868\u683c&#xff09;<\/h4>\n<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/02\/20260210230506-698bb9a2d251e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<h5>1&#xff09;\u5927\u5c0f\u4f9d\u8d56<\/h5>\n<p>\u6570\u636e\u7c7b\u578b\u7684\u786e\u5207\u5b57\u8282\u6570\u4f9d\u8d56\u4e8e\u7a0b\u5e8f\u662f\u5982\u4f55\u7f16\u8bd1\u7684&#xff08;\u662f\u7f16\u8bd1\u4e3a32\u4f4d\u8fd8\u662f64\u4f4d\u7a0b\u5e8f&#xff09;\u3002<\/p>\n<h5>2&#xff09;\u5178\u578b\u503c\u603b\u7ed3<\/h5>\n<p>&#xff08;1&#xff09;char: 1\u5b57\u8282&#xff08;\u53ef\u5b58\u50a8\u5b57\u7b26\u6216\u5c0f\u6574\u6570&#xff09;\u3002 &#xff08;2&#xff09;short: 2\u5b57\u8282\u3002 &#xff08;3&#xff09;int: \u901a\u5e38\u4e3a4\u5b57\u8282&#xff08;\u5373\u4f7f\u572864\u4f4d\u7a0b\u5e8f\u4e2d&#xff09;\u3002 &#xff08;4&#xff09;long: 4\u5b57\u8282&#xff08;32\u4f4d\u7a0b\u5e8f&#xff09;\u200b \u6216 8\u5b57\u8282&#xff08;64\u4f4d\u7a0b\u5e8f&#xff09;\u3002 &#xff08;5&#xff09;long long: 8\u5b57\u8282\u3002 &#xff08;6&#xff09;\u6307\u9488\u200b (char *\u7b49): 4\u5b57\u8282&#xff08;32\u4f4d\u7a0b\u5e8f&#xff09;\u200b \u6216 8\u5b57\u8282&#xff08;64\u4f4d\u7a0b\u5e8f&#xff09;&#xff0c;\u5373\u4f7f\u7528\u7a0b\u5e8f\u7684\u5168\u5b57\u957f\u3002 &#xff08;7&#xff09;float(\u5355\u7cbe\u5ea6): 4\u5b57\u8282\u3002 &#xff08;8&#xff09;double(\u53cc\u7cbe\u5ea6): 8\u5b57\u8282\u3002<\/p>\n<h5>3&#xff09;\u7b26\u53f7\u6027<\/h5>\n<p>&#xff08;1&#xff09;\u5927\u591a\u6570\u6570\u636e\u7c7b\u578b\u9ed8\u8ba4\u662f\u6709\u7b26\u53f7\u7684\u3002 &#xff08;2&#xff09;\u4f7f\u7528 unsigned\u5173\u952e\u5b57\u53ef\u58f0\u660e\u4e3a\u65e0\u7b26\u53f7\u7c7b\u578b&#xff08;\u5982 unsigned int&#xff09;\u3002 &#xff08;3&#xff09;\u4f8b\u5916&#xff1a;char\u7684\u7b26\u53f7\u6027\u672a\u7531C\u6807\u51c6\u5b9a\u4e49&#xff0c;\u53d6\u51b3\u4e8e\u7f16\u8bd1\u5668\u548c\u673a\u5668\u3002\u4e3a\u4fdd\u8bc1\u662f\u6709\u7b26\u53f7\u5b57\u8282&#xff0c;\u5e94\u660e\u786e\u4f7f\u7528 signed char\u3002<\/p>\n<h4>3. \u53ef\u79fb\u690d\u6027\u4e0e\u786e\u5b9a\u5927\u5c0f\u7684\u7c7b\u578b<\/h4>\n<p>&#xff08;1&#xff09;\u95ee\u9898&#xff1a;C\u6807\u51c6\u53ea\u89c4\u5b9a\u4e86\u6570\u636e\u7c7b\u578b\u7684\u6700\u5c0f\u8303\u56f4&#xff0c;\u672a\u89c4\u5b9a\u786e\u5207\u5927\u5c0f&#xff0c;\u5bfc\u81f4\u7a0b\u5e8f\u5728\u4e0d\u540c\u5b57\u957f\u673a\u5668\u95f4\u79fb\u690d\u53ef\u80fd\u51fa\u73b0\u95ee\u9898&#xff08;\u4f8b\u5982&#xff0c;\u8fc7\u53bb\u8bb8\u591a\u7a0b\u5e8f\u9519\u8bef\u5730\u5047\u8bbe int\u53ef\u4ee5\u5b58\u50a8\u6307\u9488&#xff09;\u3002 &#xff08;2&#xff09;\u89e3\u51b3\u65b9\u6848&#xff1a;ISO C99\u200b \u5f15\u5165\u4e86\u56fa\u5b9a\u5927\u5c0f\u7684\u6574\u6570\u7c7b\u578b&#xff0c;\u5982 int32_t\u548c int64_t&#xff0c;\u5b83\u4eec\u5206\u522b\u662f 4\u5b57\u8282\u200b \u548c 8\u5b57\u8282\u3002 &#xff08;3&#xff09;\u6700\u4f73\u5b9e\u8df5&#xff1a;\u4f7f\u7528\u8fd9\u4e9b\u786e\u5b9a\u5927\u5c0f\u7684\u7c7b\u578b\u662f\u7a0b\u5e8f\u5458\u7cbe\u786e\u63a7\u5236\u6570\u636e\u8868\u793a\u7684\u6700\u4f73\u9014\u5f84&#xff0c;\u53ef\u589e\u5f3a\u7a0b\u5e8f\u7684\u53ef\u79fb\u690d\u6027\u3002<\/p>\n<hr \/>\n<h2>\u603b\u7ed3\u680f<\/h2>\n<p>\u672c\u8282\u660e\u786e\u4e86 \u5b57\u957f&#xff08;Word Size&#xff09;\u200b \u4f5c\u4e3a\u8ba1\u7b97\u673a\u7cfb\u7edf\u7684\u57fa\u7840\u53c2\u6570&#xff0c;\u5176\u6838\u5fc3\u5f71\u54cd\u6709\u4e8c&#xff1a; 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