{"id":1707,"date":"2011-09-25T19:34:37","date_gmt":"2011-09-25T11:34:37","guid":{"rendered":"http:\/\/blog.jixin.ntxz.net\/?p=1707"},"modified":"2011-09-25T19:34:37","modified_gmt":"2011-09-25T11:34:37","slug":"%e4%bd%8d%e8%bf%90%e7%ae%97","status":"publish","type":"post","link":"http:\/\/www.ntxz.net\/?p=1707","title":{"rendered":"\u4f4d\u8fd0\u7b97"},"content":{"rendered":"<p>\u5728\u5f88\u591a\u7cfb\u7edf\u7a0b\u5e8f\u4e2d\u5e38\u8981\u6c42\u5728\u4f4d(bit)\u4e00\u7ea7\u8fdb\u884c\u8fd0\u7b97\u6216\u5904\u7406\u3002C\u8bed\u8a00\u63d0\u4f9b\u4e86\u4f4d\u8fd0\u7b97\u7684\u529f\u80fd\uff0c \u8fd9\u4f7f\u5f97C\u8bed\u8a00\u4e5f\u80fd\u50cf\u6c47\u7f16\u8bed\u8a00\u4e00\u6837\u7528\u6765\u7f16\u5199\u7cfb\u7edf\u7a0b\u5e8f\u3002<\/p>\n<p>\u4e00\u3001\u4f4d\u8fd0\u7b97\u7b26C\u8bed\u8a00\u63d0\u4f9b\u4e86\u516d\u79cd\u4f4d\u8fd0\u7b97\u7b26\uff1a<\/p>\n<p>&#038; \u6309\u4f4d\u4e0e<br \/>\n| \u6309\u4f4d\u6216<br \/>\n^ \u6309\u4f4d\u5f02\u6216<br \/>\n~ \u53d6\u53cd<br \/>\n<< \u5de6\u79fb\n>> \u53f3\u79fb<\/p>\n<p>1. \u6309\u4f4d\u4e0e\u8fd0\u7b97 \u6309\u4f4d\u4e0e\u8fd0\u7b97\u7b26&#8221;&#038;&#8221;\u662f\u53cc\u76ee\u8fd0\u7b97\u7b26\u3002\u5176\u529f\u80fd\u662f\u53c2\u4e0e\u8fd0\u7b97\u7684\u4e24\u6570\u5404\u5bf9\u5e94\u7684\u4e8c\u8fdb\u4f4d\u76f8\u4e0e\u3002\u53ea\u6709\u5bf9\u5e94\u7684\u4e24\u4e2a\u4e8c\u8fdb\u4f4d\u5747\u4e3a1\u65f6\uff0c\u7ed3\u679c\u4f4d\u624d\u4e3a1 \uff0c\u5426\u5219\u4e3a0\u3002\u53c2\u4e0e\u8fd0\u7b97\u7684\u6570\u4ee5\u8865\u7801\u65b9\u5f0f\u51fa\u73b0\u3002<\/p>\n<p>\u4f8b\u5982\uff1a9&#038;5\u53ef\u5199\u7b97\u5f0f\u5982\u4e0b\uff1a 00001001 (9\u7684\u4e8c\u8fdb\u5236\u8865\u7801)&#038;00000101 (5\u7684\u4e8c\u8fdb\u5236\u8865\u7801) 00000001 (1\u7684\u4e8c\u8fdb\u5236\u8865\u7801)\u53ef\u89c19&#038;5=1\u3002<\/p>\n<p>  \u6309\u4f4d\u4e0e\u8fd0\u7b97\u901a\u5e38\u7528\u6765\u5bf9\u67d0\u4e9b\u4f4d\u6e050\u6216\u4fdd\u7559\u67d0\u4e9b\u4f4d\u3002\u4f8b\u5982\u628aa \u7684\u9ad8\u516b\u4f4d\u6e05 0 \uff0c \u4fdd\u7559\u4f4e\u516b\u4f4d\uff0c \u53ef\u4f5c a&#038;255 \u8fd0\u7b97 ( 255 \u7684\u4e8c\u8fdb\u5236\u6570\u4e3a0000000011111111)\u3002<br \/>\nmain(){<br \/>\nint a=9,b=5,c;<br \/>\nc=a&b;<br \/>\nprintf(&#8220;a=%d\\nb=%d\\nc=%d\\n&#8221;,a,b,c);<br \/>\n}<\/p>\n<p>2. \u6309\u4f4d\u6216\u8fd0\u7b97 \u6309\u4f4d\u6216\u8fd0\u7b97\u7b26\u201c|\u201d\u662f\u53cc\u76ee\u8fd0\u7b97\u7b26\u3002\u5176\u529f\u80fd\u662f\u53c2\u4e0e\u8fd0\u7b97\u7684\u4e24\u6570\u5404\u5bf9\u5e94\u7684\u4e8c\u8fdb\u4f4d\u76f8\u6216\u3002\u53ea\u8981\u5bf9\u5e94\u7684\u4e8c\u4e2a\u4e8c\u8fdb\u4f4d\u6709\u4e00\u4e2a\u4e3a1\u65f6\uff0c\u7ed3\u679c\u4f4d\u5c31\u4e3a1\u3002\u53c2\u4e0e\u8fd0\u7b97\u7684\u4e24\u4e2a\u6570\u5747\u4ee5\u8865\u7801\u51fa\u73b0\u3002<br \/>\n\u4f8b\u5982\uff1a9|5\u53ef\u5199\u7b97\u5f0f\u5982\u4e0b\uff1a 00001001|00000101<br \/>\n00001101 (\u5341\u8fdb\u5236\u4e3a13)\u53ef\u89c19|5=13<br \/>\nmain(){<br \/>\nint a=9,b=5,c;<br \/>\nc=a|b;<br \/>\nprintf(&#8220;a=%d\\nb=%d\\nc=%d\\n&#8221;,a,b,c);<br \/>\n}<\/p>\n<p>3. \u6309\u4f4d\u5f02\u6216\u8fd0\u7b97 \u6309\u4f4d\u5f02\u6216\u8fd0\u7b97\u7b26\u201c^\u201d\u662f\u53cc\u76ee\u8fd0\u7b97\u7b26\u3002\u5176\u529f\u80fd\u662f\u53c2\u4e0e\u8fd0\u7b97\u7684\u4e24\u6570\u5404\u5bf9\u5e94\u7684\u4e8c\u8fdb\u4f4d\u76f8\u5f02\u6216\uff0c\u5f53\u4e24\u5bf9\u5e94\u7684\u4e8c\u8fdb\u4f4d\u76f8\u5f02\u65f6\uff0c\u7ed3\u679c\u4e3a1\u3002\u53c2\u4e0e\u8fd0\u7b97\u6570\u4ecd\u4ee5\u8865\u7801\u51fa\u73b0\uff0c\u4f8b\u59829^5\u53ef\u5199\u6210\u7b97\u5f0f\u5982\u4e0b\uff1a 00001001^00000101 00001100 (\u5341\u8fdb\u5236\u4e3a12)<br \/>\nmain(){<br \/>\nint a=9;<br \/>\na=a^15;<br \/>\nprintf(&#8220;a=%d\\n&#8221;,a);<br \/>\n}<\/p>\n<p>4. \u6c42\u53cd\u8fd0\u7b97 \u6c42\u53cd\u8fd0\u7b97\u7b26\uff5e\u4e3a\u5355\u76ee\u8fd0\u7b97\u7b26\uff0c\u5177\u6709\u53f3\u7ed3\u5408\u6027\u3002 \u5176\u529f\u80fd\u662f\u5bf9\u53c2\u4e0e\u8fd0\u7b97\u7684\u6570\u7684\u5404\u4e8c\u8fdb\u4f4d\u6309\u4f4d\u6c42\u53cd\u3002\u4f8b\u5982\uff5e9\u7684\u8fd0\u7b97\u4e3a\uff1a ~(0000000000001001)\u7ed3\u679c\u4e3a\uff1a1111111111110110<\/p>\n<p>5. \u5de6\u79fb\u8fd0\u7b97 \u5de6\u79fb\u8fd0\u7b97\u7b26\u201c<<\u201d\u662f\u53cc\u76ee\u8fd0\u7b97\u7b26\u3002\u5176\u529f\u80fd\u628a\u201c<< \u201d\u5de6\u8fb9\u7684\u8fd0\u7b97\u6570\u7684\u5404\u4e8c\u8fdb\u4f4d\u5168\u90e8\u5de6\u79fb\u82e5\u5e72\u4f4d\uff0c\u7531\u201c<<\u201d\u53f3\u8fb9\u7684\u6570\u6307\u5b9a\u79fb\u52a8\u7684\u4f4d\u6570\uff0c\n\u9ad8\u4f4d\u4e22\u5f03\uff0c\u4f4e\u4f4d\u88650\u3002\u4f8b\u5982\uff1a a<<4 \u6307\u628aa\u7684\u5404\u4e8c\u8fdb\u4f4d\u5411\u5de6\u79fb\u52a84\u4f4d\u3002\u5982a=00000011(\u5341\u8fdb\u52363)\uff0c\u5de6\u79fb4\u4f4d\u540e\u4e3a00110000(\u5341\u8fdb\u523648)\u30026. \u53f3\u79fb\u8fd0\u7b97\u53f3\u79fb\u8fd0\u7b97\u7b26\u201c>>\u201d\u662f\u53cc\u76ee\u8fd0\u7b97\u7b26\u3002\u5176\u529f\u80fd\u662f\u628a\u201c>> \u201d\u5de6\u8fb9\u7684\u8fd0\u7b97\u6570\u7684\u5404\u4e8c\u8fdb\u4f4d\u5168\u90e8\u53f3\u79fb\u82e5\u5e72\u4f4d\uff0c\u201c>>\u201d\u53f3\u8fb9\u7684\u6570\u6307\u5b9a\u79fb\u52a8\u7684\u4f4d\u6570\u3002<br \/>\n\u4f8b\u5982\uff1a\u8bbe a=15\uff0ca>>2 \u8868\u793a\u628a000001111\u53f3\u79fb\u4e3a00000011(\u5341\u8fdb\u52363)\u3002\u5e94\u8be5\u8bf4\u660e\u7684\u662f\uff0c\u5bf9\u4e8e\u6709\u7b26\u53f7\u6570\uff0c\u5728\u53f3\u79fb\u65f6\uff0c\u7b26\u53f7\u4f4d\u5c06\u968f\u540c\u79fb\u52a8\u3002\u5f53\u4e3a\u6b63\u6570\u65f6\uff0c \u6700\u9ad8\u4f4d\u88650\uff0c\u800c\u4e3a\u8d1f\u6570\u65f6\uff0c\u7b26\u53f7\u4f4d\u4e3a1\uff0c\u6700\u9ad8\u4f4d\u662f\u88650\u6216\u662f\u88651 \u53d6\u51b3\u4e8e\u7f16\u8bd1\u7cfb\u7edf\u7684\u89c4\u5b9a\u3002Turbo C\u548c\u5f88\u591a\u7cfb\u7edf\u89c4\u5b9a\u4e3a\u88651\u3002<br \/>\nmain(){<br \/>\nunsigned a,b;<br \/>\nprintf(&#8220;input a number: &#8220;);<br \/>\nscanf(&#8220;%d&#8221;,&#038;a);<br \/>\nb=a>>5;<br \/>\nb=b&#038;15;<br \/>\nprintf(&#8220;a=%d\\tb=%d\\n&#8221;,a,b);<br \/>\n}<br \/>\n\u8bf7\u518d\u770b\u4e00\u4f8b!<br \/>\nmain(){<br \/>\nchar a=&#8217;a&#8217;,b=&#8217;b&#8217;;<br \/>\nint p,c,d;<br \/>\np=a;<br \/>\np=(p<<8)|b;\nd=p&#038;0xff;\nc=(p&#038;0xff00)>>8;<br \/>\nprintf(&#8220;a=%d\\nb=%d\\nc=%d\\nd=%d\\n&#8221;,a,b,c,d);<br \/>\n}<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u5f88\u591a\u7cfb\u7edf\u7a0b\u5e8f\u4e2d\u5e38\u8981\u6c42\u5728\u4f4d(bit)\u4e00\u7ea7\u8fdb\u884c\u8fd0\u7b97\u6216\u5904\u7406\u3002C\u8bed\u8a00\u63d0\u4f9b\u4e86\u4f4d\u8fd0\u7b97\u7684\u529f\u80fd\uff0c \u8fd9\u4f7f\u5f97C\u8bed\u8a00\u4e5f\u80fd\u50cf\u6c47\u7f16\u8bed\u8a00 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[479],"class_list":["post-1707","post","type-post","status-publish","format-standard","hentry","category-fromnetwork","tag-479"],"views":296,"_links":{"self":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/1707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1707"}],"version-history":[{"count":1,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/1707\/revisions"}],"predecessor-version":[{"id":1708,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=\/wp\/v2\/posts\/1707\/revisions\/1708"}],"wp:attachment":[{"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1707"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1707"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.ntxz.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}