{"id":128,"date":"2025-09-29T23:08:08","date_gmt":"2025-09-29T15:08:08","guid":{"rendered":"https:\/\/www.zhihuiren.xyz\/?p=128"},"modified":"2025-12-02T17:09:37","modified_gmt":"2025-12-02T09:09:37","slug":"elementor-128","status":"publish","type":"post","link":"https:\/\/www.zhihuiren.xyz\/?p=128","title":{"rendered":"C\u8bed\u8a00\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362"},"content":{"rendered":"\t\t
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\/\/\u5f15\u8a00<\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\u8fd1\u65e5\u7b14\u8005\u5728\u5b66\u4e60C\u8bed\u8a00\u8fc7\u7a0b\u4e2d\u610f\u8bc6\u5230\u4e86\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u7684\u91cd\u8981\u6027\uff0c\u6545\u5b66\u4e60\u4e86\u89e3\u76f8\u5173\u77e5\u8bc6\uff0c\u7528\u6b64\u6587\u8bb0\u5f55\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\/\/\u6570\u636e\u7c7b\u578b\u7ea7\u522b<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t
\u6570\u636e\u7c7b\u578b\u7ea7\u522b\u9ad8\u4f4e<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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\/\/\u4ec0\u4e48\u662f\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u00a0\u5728\u6ca1\u6709\u5199 (type) \u5f3a\u5236\u8f6c\u6362\u7684\u60c5\u51b5\u4e0b\uff0c\u7f16\u8bd1\u5668\u81ea\u52a8\u8fdb\u884c\u7684\u4e00\u79cd\u7c7b\u578b\u8f6c\u6362\u884c\u4e3a\u3002<\/p>

\u4f8b\u5982\uff1a<\/p>

int a = 3;<\/p>

double b = a;\u00a0<\/p>

\u6b64\u65f6\uff0c\u56e0\u4e3adouble\u7c7b\u578b\u7684\u8f6c\u6362\u4f18\u5148\u7ea7\u9ad8\u4e8eint\uff0c\u53d8\u91cfa\u5728b\u7684\u8d4b\u503c\u8fd0\u7b97\u65f6\uff0c\u4f1a\u88ab\u81ea\u52a8\u8f6c\u6362\u4e3adouble\u7c7b\u578b\u3002<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\/\/\u6574\u578b\u63d0\u5347<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u8fd9\u662f C \u8bed\u8a00\u4e2d\u6700\u5e38\u89c1\u7684\u9690\u5f0f\u8f6c\u6362\u3002<\/p>

\u25b6 \u89c4\u5219\uff1a<\/p>

\u6240\u6709\u6bd4 int \u5c0f\u7684\u7c7b\u578b\uff1a<\/p>

char , unsigned char , short , unsigned short<\/p>

\u5728\u8fd0\u7b97\u65f6\u4f1a \u81ea\u52a8\u63d0\u5347\u4e3a int \u6216 unsigned int\u3002<\/p>

\u4f8b\u5982\uff1a<\/p>

char a = 5;<\/p>

char b = 6;<\/p>

char c = a + b; \/\/ a\u3001b \u90fd\u5148\u63d0\u5347\u4e3a int\uff0c\u518d\u505a\u8fd0\u7b97<\/p>

a+b \u7684\u7c7b\u578b\u662f int\uff0c\u4e0d\u662f char\u3002<\/p>

\u26a0 \u53ef\u80fd\u5bfc\u81f4\u6ea2\u51fa\u6216\u7cbe\u5ea6\u95ee\u9898\uff1a<\/p>

char x = 120;<\/p>

char y = 10;<\/p>

char z = x + y; \/\/ 120+10=130\uff0c\u6ea2\u51fa\u5230 char \u8303\u56f4<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\/\/\u8fd0\u7b97\u4e2d\u7684\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u5f53\u8868\u8fbe\u5f0f\u4e2d\u51fa\u73b0\u4e0d\u540c\u7c7b\u578b\u65f6\uff0cC \u4f1a\u8fdb\u884c\u81ea\u52a8\u63d0\u5347\uff1a<\/p>

\u25b6int + double<\/p>

int a = 10;<\/p>

double b = 3.5;<\/p>

double c = a + b; \/\/ a -> double<\/p>

\u25b6 float + double<\/p>

float x = 1.2f;<\/p>

double y = 2.3;<\/p>

double z = x + y; \/\/ x -> double<\/p>

\u25b6unsigned + signed\u00a0<\/p>

unsigned int a = 5;<\/p>

int b = -20;<\/p>

printf(“%d\\n”, a + b);<\/p>

b \u4f1a\u81ea\u52a8\u8f6c\u6210 unsigned\uff0c\u53d8\u4e3a\u6781\u5927\u6b63\u6570<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\/\/\u8d4b\u503c\u65f6\u7684\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\t

\u25b6 double -> int<\/p>

double a = 3.14;<\/p>

int b = a; \/\/ \u5c0f\u6570\u90e8\u5206\u4e22\u5931<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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\/\/\u5e38\u89c1\u95ee\u9898<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u2460 \u8868\u8fbe\u5f0f\u4e2d\u53c2\u4e0e\u9664\u6cd5<\/p>

printf(“%f”, 5\/2);<\/p>

\u4e24\u4e2a\u90fd\u662f int \u2192 \u8ba1\u7b97\u7ed3\u679c\u662f int \u2192 2
\u6700\u540e\u8f6c\u4e3a double \u2192 2.000000<\/p>

\u4e0d\u4e22\u7cbe\u5ea6\u7684\u5199\u6cd5\u5e94\u4e3a\uff1a<\/p>

printf(“%f”, 5\/2.0);\u00a0 \/\/ 2.500000<\/p>

\u2461 char \u6ea2\u51fa<\/p>

char c = 130;
printf(“%d\\n”, c);\u00a0\u00a0 \/\/ -126\uff08\u6709\u7b26\u53f7 char \u6ea2\u51fa\uff09<\/p>

\u2462 uint \u4e0e int \u6df7\u7b97<\/p>

unsigned int a = 100;
int b = -200;<\/p>

printf(“%d\\n”, a+b);\u00a0 \/\/ b \u8f6c\u65e0\u7b26\u53f7 \u2192 \u5de8\u5927\u6b63\u6570<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

\n\t\t\t\t\t
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\/\/\u603b\u7ed3<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u663e\u7136\uff0c\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u5e76\u4e0d\u662f\u4e00\u4e2a\u4f18\u79c0\u7684\u5199\u6cd5\u3002\u5728\u4f7f\u7528\u4e2d\u5e94\u8be5\u907f\u514d\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\uff0c\u591a\u7528\u663e\u793a\u7c7b\u578b\u8f6c\u6362\u3002<\/p>

\u53e6\u5916\uff0c\u5982\u4eca\u5927\u591a\u6570\u7684\u7f16\u8bd1\u5668\u5728\u7f16\u8bd1\u65f6\uff0c\u90fd\u4f1awarning\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u3002<\/p>

\u5728coding\u65f6\u5e94\u8be5\u517b\u6210\u907f\u514d\u8fd9\u79cd\u5199\u6cd5\u7684\u597d\u4e60\u60ef\u3002<\/p>

\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

\/\/\u5f15\u8a00 \u8fd1\u65e5\u7b14\u8005\u5728\u5b66\u4e60C\u8bed\u8a00\u8fc7\u7a0b\u4e2d\u610f\u8bc6\u5230\u4e86\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362\u7684\u91cd\u8981\u6027\uff0c\u6545\u5b66\u4e60\u4e86\u89e3\u76f8\u5173\u77e5\u8bc6\uff0c\u7528\u6b64\u6587\u8bb0\u5f55\u3002 \/\/\u6570\u636e\u7c7b […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,27,24],"tags":[],"class_list":["post-128","post","type-post","status-publish","format-standard","hentry","category-5","category-27","category-24"],"_links":{"self":[{"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=\/wp\/v2\/posts\/128","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=128"}],"version-history":[{"count":23,"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=\/wp\/v2\/posts\/128\/revisions"}],"predecessor-version":[{"id":164,"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=\/wp\/v2\/posts\/128\/revisions\/164"}],"wp:attachment":[{"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=128"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=128"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zhihuiren.xyz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=128"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}