{"id":817,"date":"2012-08-13T20:49:46","date_gmt":"2012-08-13T12:49:46","guid":{"rendered":"http:\/\/www.gejo.in\/?p=817"},"modified":"2012-08-13T20:49:46","modified_gmt":"2012-08-13T12:49:46","slug":"c%e8%af%ad%e8%a8%80%e6%8c%87%e5%ae%9afloatdouble%e7%b1%bb%e5%9e%8b%e5%b0%8f%e6%95%b0%e4%bd%8d%e6%95%b0variable","status":"publish","type":"post","link":"https:\/\/www.mujins.com\/?p=817","title":{"rendered":"C\u8bed\u8a00\u6307\u5b9afloat\/double\u7c7b\u578b\u5c0f\u6570\u4f4d\u6570(Variable)"},"content":{"rendered":"<p>C\u5904\u7406\u5b57\u7b26\u4e32\u76f8\u6bd4\u4e8eC++\u662f\u7e41\u7410\u7684\u591a\uff0c\u4eca\u5929\u9047\u5230\u4e00\u4e2a\u63a5\u53e3\u9700\u6c42\uff1a\u4f20\u5165\u88ab\u9664\u6570\uff0c\u9664\u6570\uff0c\u7ed3\u679c\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u8981\u6c42\u8fd4\u56de\u7684\u683c\u5f0f\u5316\u7684\u7ed3\u679c\u3002<\/p>\n<p>\u601d\u8003\uff1a<\/p>\n<p>1.\u5165\u53c2\u81ea\u7136\u90fd\u662f\u5b57\u7b26\u4e32\uff0c\u8f6c\u6362\u5c31\u9700\u8981atoi,atol,atoll\u7b49\u5e93\u51fd\u6570\u4e86\uff0c\u8fd9\u4e9b\u6570\u636e\u65e0\u975e\u662f\u8ba1\u7b97KB&#8211;MB,Money\u6570\u636e\uff0c\u800c\u4e14\u6ca1\u6709\u5c0f\u6570\uff01\uff01\u90a3\u4e48\u5c31long long\u4e86\uff1b<\/p>\n<p>2.\u9664\u6570\u81ea\u7136\u4e0d\u80fd\u4e3a\u96f6\uff1b<\/p>\n<p>3.\u7c7b\u578b\u7684\u8f6c\u6362\uff0c\u7531\u4e8e\u7cbe\u5ea6\u8981\u6c42\u4e0d\u662f\u5f88\u9ad8\uff0c\u800c\u4e14\u6570\u636e\u4e0d\u662f\u592a\u5927\uff0c\u5f3a\u5236\u8f6c\u6362\u4e0d\u4f1a\u6709\u592a\u5927\u95ee\u9898\uff1b<\/p>\n<p>4.\u8fd4\u56de\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\uff01\u8fd9\u597d\u50cf\u8fd9\u6ca1\u6709\u7528\u8fc7\uff0c\u4ee5\u524d\u7528\u8fc7\u7684\u90fd\u662f\u201c%m.n f&#8221;,&#8221;%.Xlf&#8221;,\u7ed9\u5b9a\u7684\u4e5f\u5c31\u8bf4\u662f\u4e2a\u53d8\u91cf\uff0c\u96be\u9053\u518d\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u5904\u7406\uff0c\u4e0d\u4f1a\u5427\uff1f\u53ea\u80fd\u662fUNIX-C\u8bed\u8a00\uff0cC++\u7684IO\u51fd\u6570\u4e0d\u80fd\u7528\u7684\uff0csetprecision()\u548cfixed()\u81ea\u7136\u4e0d\u80fd\u7528..<\/p>\n<p>\u5f53\u7136\u6709\u975e\u5e38\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u5c45\u7136\u4e0d\u77e5\u9053&#8230;<\/p>\n<p><a href=\"https:\/\/www.gigiwangs.com\/wp-content\/uploads\/2012\/08\/cplusplus.jpg\" data-lightbox=\"gal[817]\"><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-819 aligncenter\" title=\"cplusplus\" src=\"https:\/\/www.gigiwangs.com\/wp-content\/uploads\/2012\/08\/cplusplus.jpg\" alt=\"\" width=\"315\" height=\"314\" \/><\/a><\/p>\n<pre class=\"brush:c\">int tool_devison(char *str_dividend,char *str_divider,char *str_digit)\n{\n\tlong long ll_dividend=0L,ll_divider=0L;\n\tint i_digit=0;\n\tdouble d_result=0.0f;\n\tchar pRet[32];\n\n\t\/\/Some judgment\n\t\/\/....\n\tll_dividend=atoll(str_dividend);\n\tll_divider=atoll(str_divider);\n\ti_digit=atoi(str_digit);\n\n\tif(ll_divider==0)\n\t{\n\t\tsprintf(pRet,\"E_ERROR\");\n\t\t\/\/msgsnd(pRet);\n\t\t\/\/call for some processing\n\t\treturn 1;\n\t}\n\td_result=(double)ll_dividend\/(double)ll_divider;\n\tsprintf(pRet,\"%.*lf\",i_digit,d_result);\n\t\/\/msgsnd(pRet);\n\t\/\/call for some processing\n\treturn 0;\n}<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&#8212;&#8212;&#8212;&#8212;-by GIGI. ingressplus.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u5904\u7406\u5b57\u7b26\u4e32\u76f8\u6bd4\u4e8eC++\u662f\u7e41\u7410\u7684\u591a\uff0c\u4eca\u5929\u9047\u5230\u4e00\u4e2a\u63a5\u53e3\u9700\u6c42\uff1a\u4f20\u5165\u88ab\u9664\u6570\uff0c\u9664\u6570\uff0c\u7ed3\u679c\u7684\u5c0f\u6570\u4f4d\u6570\uff0c\u8981\u6c42\u8fd4\u56de\u7684\u683c\u5f0f\u5316\u7684\u7ed3\u679c\u3002 \u601d\u8003\uff1a 1.\u5165\u53c2\u81ea\u7136\u90fd\u662f\u5b57\u7b26\u4e32\uff0c\u8f6c\u6362\u5c31\u9700\u8981atoi,atol,atoll\u7b49\u5e93\u51fd\u6570\u4e86\uff0c\u8fd9\u4e9b\u6570\u636e\u65e0\u975e\u662f\u8ba1\u7b97KB&#8211;MB,Money\u6570\u636e\uff0c\u800c\u4e14\u6ca1\u6709\u5c0f\u6570\uff01\uff01\u90a3\u4e48\u5c31long long\u4e86\uff1b 2.\u9664\u6570\u81ea\u7136\u4e0d\u80fd\u4e3a\u96f6\uff1b 3.\u7c7b\u578b\u7684\u8f6c\u6362\uff0c\u7531\u4e8e\u7cbe\u5ea6\u8981\u6c42\u4e0d\u662f\u5f88\u9ad8\uff0c\u800c\u4e14\u6570\u636e\u4e0d\u662f\u592a\u5927\uff0c\u5f3a\u5236\u8f6c\u6362\u4e0d\u4f1a\u6709\u592a\u5927\u95ee\u9898\uff1b 4.\u8fd4\u56de\u6307\u5b9a\u7684\u5c0f\u6570\u4f4d\u6570\uff01\u8fd9\u597d\u50cf\u8fd9\u6ca1\u6709\u7528\u8fc7\uff0c\u4ee5\u524d\u7528\u8fc7\u7684\u90fd\u662f\u201c%m.n f&#8221;,&#8221;%.Xlf&#8221;,\u7ed9\u5b9a\u7684\u4e5f\u5c31\u8bf4\u662f\u4e2a\u53d8\u91cf\uff0c\u96be\u9053\u518d\u8f6c\u6362\u6210\u5b57\u7b26\u4e32\u5904\u7406\uff0c\u4e0d\u4f1a\u5427\uff1f\u53ea\u80fd\u662fUNIX-C\u8bed\u8a00\uff0cC++\u7684IO\u51fd\u6570\u4e0d\u80fd\u7528\u7684\uff0csetprecision()\u548cfixed()\u81ea\u7136\u4e0d\u80fd\u7528.. \u5f53\u7136\u6709\u975e\u5e38\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u5c45\u7136\u4e0d\u77e5\u9053&#8230; int tool_devison(char *str_dividend,char *str_divider,char *str_digit) { long long ll_dividend=0L,ll_divider=0L; int i_digit=0; double d_result=0.0f; char pRet[32]; \/\/Some judgment \/\/&#8230;. ll_dividend=atoll(str_dividend); ll_divider=atoll(str_divider); i_digit=atoi(str_digit); if(ll_divider==0) { sprintf(pRet,&#8221;E_ERROR&#8221;); \/\/msgsnd(pRet); \/\/call for some processing return 1; } d_result=(double)ll_dividend\/(double)ll_divider; sprintf(pRet,&#8221;%.*lf&#8221;,i_digit,d_result); \/\/msgsnd(pRet); \/\/call for some processing return 0; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":819,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[31],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mujins.com\/index.php?rest_route=\/wp\/v2\/posts\/817"}],"collection":[{"href":"https:\/\/www.mujins.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mujins.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mujins.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mujins.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=817"}],"version-history":[{"count":0,"href":"https:\/\/www.mujins.com\/index.php?rest_route=\/wp\/v2\/posts\/817\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mujins.com\/index.php?rest_route=\/"}],"wp:attachment":[{"href":"https:\/\/www.mujins.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=817"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mujins.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=817"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mujins.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=817"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}