{"id":175,"date":"2014-07-05T21:57:05","date_gmt":"2014-07-05T13:57:05","guid":{"rendered":"http:\/\/www.fuheicat.com\/?p=175"},"modified":"2014-07-06T21:08:14","modified_gmt":"2014-07-06T13:08:14","slug":"%e8%85%b9%e9%bb%91%e7%8c%ab%e8%b7%9f%e4%bd%a0%e4%b8%80%e8%b5%b7%e5%ad%a6c2-%e9%a2%98%e7%9b%ae%e8%a2%ab%e6%88%91%e5%90%83%e4%ba%86","status":"publish","type":"post","link":"https:\/\/www.fuheicat.com\/?p=175","title":{"rendered":"\u8179\u9ed1\u732b\u8ddf\u4f60\u4e00\u8d77\u5b66C++(2)\u2014\u2014\u9898\u76ee\u88ab\u6211\u5403\u4e86"},"content":{"rendered":"

Yoo~\u8fd9\u4e00\u6b21\u7684\u76ee\u6807\u662f\uff1a
\n\u2460\u8fd0\u7b97\u7b26
\n\u2461\u53d8\u91cf\u3001\u5e38\u91cf\u5b9a\u4e49
\n\u2462\u6570\u636e\u7c7b\u578b<\/h4>\n
#include<iostream> \/\/\u5934\u6587\u4ef6\r\nusing namespace std; \/\/\u4f7f\u7528\u547d\u540d\u7a7a\u95f4\r\nconst double pi = 3.14159; \/\/\u5b9a\u4e49\u5e38\u91cf\r\nint main () { \/\/\u4e3b\u51fd\u6570\r\n\tint r; \/\/\u5b9a\u4e49\u53d8\u91cf\r\n\tcin>>r; \/\/\u8f93\u5165r\r\n\tcout<<\"\u9762\u79ef:\"<<pi*r*r<<endl; \/\/\u8ba1\u7b97\u53ca\u8f93\u51fa\r\n\tcout<<\"\u5468\u957f:\"<<2*pi*r<<endl;\/\/endl\u4e5f\u662f\u6362\u884c\u7b26\r\n\treturn 0; \/\/\u8fd4\u56de\r\n}<\/pre>\n
\u4e0a\u9762\u7684\u8fd9\u6bb5\u7a0b\u5e8f\u662f\u8ba1\u7b97\u5706\u7684\u9762\u79ef\u548c\u5468\u957f\u3002<\/p>\n
\u5e38\u91cf<\/h4>\n
Q:\u4ec0\u4e48\u662f\u5e38\u91cf\uff1f
\nA:\u5e38\u91cf\u662f\u5728\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u4e0d\u4f1a\u6539\u53d8\u7684\u91cf\uff0c\u5728\u540e\u9762\u4e5f\u4e0d\u53ef\u4ee5\u4e3a\u4ed6\u8d4b\u503c\u3002\uff08\u6307\u9488\u5e38\u91cf\u4ec0\u4e48\u7684\u5148\u65e0\u89c6\u597d\u4e86\u3002\uff09
\nQ:\u5e38\u91cf\u6709\u4ec0\u4e48\u597d\u5904\uff1f
\nA:\u589e\u5f3a\u53ef\u8bfb\u6027\uff0c\u51cf\u5c11\u51fa\u9519\uff0c\u63d0\u9ad8\u8f93\u5165\u6548\u7387\u7b49\u3002
\n\u5e38\u91cf\u5b9a\u4e49\u683c\u5f0f\uff1a
\nconst \u7c7b\u578b\u540d \u53d8\u91cf\u540d = data ;<\/p>\n
\u53d8\u91cf<\/h4>\n
\u987e\u540d\u601d\u4e49\u5566\u2026\u2026
\n\u53d8\u91cf\u5b9a\u4e49\u683c\u5f0f\uff1a
\n\u7c7b\u578b\u540d \u53d8\u91cf\u540d1[,\u53d8\u91cf\u540d2,\u2026\u2026];<\/p>\n
\u8fd0\u7b97\u7b26<\/h4>\n
\u2460\u4e94\u79cd\u6570\u5b66\u8fd0\u7b97\u7b26 +\uff0c-\uff0c*\uff0c\/\uff0c%<\/span><\/p>\n
\u524d\u56db\u79cd\u5c31\u4e0d\u7528\u8bf4\u4e86\uff0c%\u662f\u53d6\u6a21(\u4f59\u6570)\uff0c\u4f8b\u59825%3=2\u3002<\/p>\n
 \u2461\u7ec4\u5408\u8fd0\u7b97\u7b26 +=, -=, *=, \/=, %=, >>=, <<=, &=, ^=, |=<\/span> (\u6709\u4e9b\u6682\u65f6\u7528\u4e0d\u5230\u7684\u5c31\u4e0d\u8bf4\u4e86\u3002)<\/p>\n
\u4f8b\u5982\uff1a a+=1; \u4e0e a=a+1; \u6548\u679c\u662f\u76f8\u540c\u7684\u3002<\/p>\n
\u2462\u9012\u52a0(++)\u548c\u9012\u51cf(–) <\/span><\/p>\n
\u4f8b\u5982\uff1a a++; \u4e0e a=a+1; \u6548\u679c\u662f\u76f8\u540c\u7684\u3002<\/p>\n
\u2463\u5173\u7cfb\u8fd0\u7b97\u7b26 ==, !=, >, <, >=, <=<\/span><\/p>\n
==\u76f8\u7b49\uff0c!=\u4e0d\u7b49
\n\u8fd4\u56de\u503c\u4e3atrue \u6216\u8005 false\u3002
\n\u4f8b\u5982\uff1a
\n7==7\u5c06\u8fd4\u56detrue
\n7<8\u5c06\u8fd4\u56defalse<\/p>\n
\u903b\u8f91\u8fd0\u7b97\u7b26 !, &&, || ,^<\/span><\/p>\n
\uff01\u4e3aNot\u975e
\n&&\u4e3aAnd\u4e0e
\n||\u4e3aOr\u6216 \u00a0
\n^\u4e3a\u5f02\u6216<\/p>\n
\u4f8b\u5982\uff1a !(2==2)||(3>4)&&(1+1==2) \u8fd4\u56defalse\u3002<\/p>\n
 \u6761\u4ef6\u8fd0\u7b97\u7b26 ?<\/span><\/p>\n
\u683c\u5f0f\uff1a\u6761\u4ef6?\u8fd4\u56de\u503c1:\u8fd4\u56de\u503c2
\n\u4f8b\u5982\uff1a
\n(a>b)?a:b;\u5c06\u8fd4\u56dea\uff0cb\u4e2d\u8f83\u5927\u7684\u4e00\u4e2a\u3002<\/p>\n
\u6570\u636e\u7c7b\u578b<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n
\u7c7b\u578b<\/td>\n\u542b\u4e49<\/td>\n\u6700\u5c0f\u5b58\u50a8\u7a7a\u95f4<\/td>\n<\/tr>\n
Bool<\/td>\nBoolean<\/td>\nNA<\/td>\n<\/tr>\n
char<\/td>\ncharacter<\/td>\n8\u00a0bits<\/td>\n<\/tr>\n
Wchar_t<\/td>\nwide\u00a0character<\/td>\n16\u00a0bits<\/td>\n<\/tr>\n
short<\/td>\nshort\u00a0integer<\/td>\n16\u00a0bits<\/td>\n<\/tr>\n
int<\/td>\ninteger<\/td>\n32\u00a0bits<\/td>\n<\/tr>\n
long long<\/td>\nlong long integer<\/td>\n64\u00a0bits<\/td>\n<\/tr>\n
float<\/td>\nsingle-precision\u00a0floating-point<\/td>\n6\u00a0significant\u00a0digits<\/td>\n<\/tr>\n
Double<\/td>\ndouble-precision\u00a0floating-point<\/td>\n10\u00a0significant\u00a0digits<\/td>\n<\/tr>\n
Long\u00a0double<\/td>\nextended-precision\u00a0floating-point<\/td>\n10\u00a0significant\u00a0digits<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\u5982\u679c\u4f60\u6709\u4ec0\u4e48\u610f\u89c1\u5efa\u8bae\u6216\u53d1\u73b0\u4e86\u4ec0\u4e48\u9519\u8bef\uff0c\u8bf7\u5728\u4e0b\u65b9\u7559\u8a00\u6216\u7ed9\u6211\u53d1\u90ae\u4ef6\u54e6\u3002\u90ae\u7bb1\uff1a18340730@QQ.COM<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
Yoo~\u8fd9\u4e00\u6b21\u7684\u76ee\u6807\u662f\uff1a \u2460\u8fd0\u7b97\u7b26 \u2461\u53d8\u91cf\u3001\u5e38\u91cf\u5b9a\u4e49 \u2462\u6570\u636e\u7c7b\u578b #include<iostream&g […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-175","post","type-post","status-publish","format-standard","hentry","category-essay"],"_links":{"self":[{"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=\/wp\/v2\/posts\/175","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=175"}],"version-history":[{"count":8,"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=\/wp\/v2\/posts\/175\/revisions"}],"predecessor-version":[{"id":187,"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=\/wp\/v2\/posts\/175\/revisions\/187"}],"wp:attachment":[{"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=175"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=175"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fuheicat.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=175"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}