{"id":276,"date":"2017-02-03T12:44:47","date_gmt":"2017-02-03T04:44:47","guid":{"rendered":"http:\/\/www.rainweb.site\/?p=276"},"modified":"2017-02-03T12:44:47","modified_gmt":"2017-02-03T04:44:47","slug":"c-article0012","status":"publish","type":"post","link":"http:\/\/rain1024.com\/index.php\/2017\/02\/03\/c-article0012\/","title":{"rendered":"C++\u4e2d\u5173\u4e8e\u91cd\u8f7d[]\u548c\uff08\uff09 = \u8fd0\u7b97\u7b26"},"content":{"rendered":"<h4>\u5173\u4e8e\u91cd\u8f7d[]\u548c\uff08\uff09 = \u8fd0\u7b97\u7b26,\u5e73\u65f6\u4e66\u4e0a\u6559\u7684\u90fd\u662f\u91cd\u8f7d\u4e2a+\uff0c-\uff0c*\uff0c\/\uff0c\u4ec0\u4e48\u7684\uff0c\u76f4\u63a5operator+\u7b26\u5408\uff0c\u7136\u540e\u4e00\u5199\u4ee3\u7801\u5c31\u53ef\u4ee5\uff0c\u4f46\u6709\u7684\u65f6\u5019\u4f1a\u9047\u5230\u6bd4\u8f83\u590d\u6742\u7684\uff0c\u5c31\u50cf[],\u53ef\u4ee5\u7528\u6765\u91cd\u8f7d\u4e00\u4e2a\u4e00\u7ef4\u6570\u7ec4\uff0c\u6216\u8005\u4e8c\u7ef4\u6570\u7ec4\uff0c\u60f3\u8981\u7814\u7a76\u7684\u53ef\u4ee5\u91cd\u65b0\u5199\u4e00\u5199\uff0c\u53ef\u4ee5\u548c\u6211\u4ea4\u6d41\u3002<\/h4>\n<pre><code>#include \"iostream\"\nusing namespace std;\nclass Array2\n{\npublic:\nArray2(int m, int n)\n{\np= new int*[m];\nfor (int i = 0; i &lt; m; i++)\np[i] = new int[n];\n};\nArray2() :p(NULL){};\nArray2 &amp; operator =(const Array2 &amp;arr)\n{\nif (p == arr.p) return *this;\nif (p != NULL) delete[]p;\np = arr.p;\nreturn *this;\n};\nint * &amp; operator [](const int &amp; m)\n{\nreturn p[m]; \/\/\u5173\u952e\u5728\u4e8e\u8fd4\u56de\u7684\u7c7b\u578b\u4e3aint *\u5373\u53ef\n};\nint &amp; operator ()(const int &amp;m, int const &amp; n)\n{\nreturn p[m][n];\n}\nprivate:\nint **p;\n};\nint main() {\nArray2 a(3,4);\nint i,j;\nfor( i = 0;i &lt; 3; ++i )\nfor( j = 0; j &lt; 4; j ++ )\na[i][j] = i * 4 + j;\nfor( i = 0;i &lt; 3; ++i ) {\nfor( j = 0; j &lt; 4; j ++ ) {\ncout &lt;&lt; a(i,j) &lt;&lt; \",\";\n}\ncout &lt;&lt; endl;\n}\ncout &lt;&lt; \"next\" &lt;&lt; endl;\nArray2 b; b = a;\nfor( i = 0;i &lt; 3; ++i ) {\nfor( j = 0; j &lt; 4; j ++ ) {\ncout &lt;&lt; b[i][j] &lt;&lt; \",\";\n}\ncout &lt;&lt; endl;\n}\nreturn 0;\n}\n\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u5173\u4e8e\u91cd\u8f7d[]\u548c\uff08\uff09 = \u8fd0\u7b97\u7b26,\u5e73\u65f6\u4e66\u4e0a\u6559\u7684\u90fd\u662f\u91cd\u8f7d\u4e2a+\uff0c-\uff0c*\uff0c\/\uff0c\u4ec0\u4e48\u7684\uff0c\u76f4\u63a5operator+\u7b26\u5408\uff0c\u7136\u540e\u2026 <span class=\"read-more\"><a href=\"http:\/\/rain1024.com\/index.php\/2017\/02\/03\/c-article0012\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":2,"featured_media":290,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[29],"tags":[39],"class_list":["post-276","post","type-post","status-publish","format-aside","has-post-thumbnail","hentry","category-cplus","tag-cplus","post_format-post-format-aside"],"_links":{"self":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/comments?post=276"}],"version-history":[{"count":0,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/276\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media\/290"}],"wp:attachment":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media?parent=276"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/categories?post=276"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/tags?post=276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}