{"id":3256,"date":"2025-03-28T00:05:39","date_gmt":"2025-03-27T16:05:39","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3256"},"modified":"2025-03-28T00:05:39","modified_gmt":"2025-03-27T16:05:39","slug":"c-%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%88operators-in-c%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/03\/28\/c-%e8%bf%90%e7%ae%97%e7%ac%a6%ef%bc%88operators-in-c%ef%bc%89\/","title":{"rendered":"C++ \u8fd0\u7b97\u7b26\uff08Operators in C++\uff09"},"content":{"rendered":"\n

C++ \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u8fdb\u884c\u5404\u79cd\u8fd0\u7b97\u548c\u64cd\u4f5c\u3002\u8fd0\u7b97\u7b26\u662f\u6267\u884c\u64cd\u4f5c\u7684\u7b26\u53f7\uff0c\u7528\u6765\u5904\u7406\u6570\u636e\u5e76\u751f\u6210\u7ed3\u679c\u3002\u8fd0\u7b97\u7b26\u7684\u79cd\u7c7b\u7e41\u591a\uff0cC++ \u652f\u6301\u7b97\u672f\u8fd0\u7b97\u7b26\u3001\u5173\u7cfb\u8fd0\u7b97\u7b26\u3001\u903b\u8f91\u8fd0\u7b97\u7b26\u3001\u4f4d\u8fd0\u7b97\u7b26\u3001\u8d4b\u503c\u8fd0\u7b97\u7b26\u7b49\u3002<\/p>\n\n\n\n

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1. \u7b97\u672f\u8fd0\u7b97\u7b26\uff08Arithmetic Operators\uff09<\/strong><\/h2>\n\n\n\n

\u7b97\u672f\u8fd0\u7b97\u7b26\u7528\u4e8e\u57fa\u672c\u7684\u6570\u5b66\u8fd0\u7b97\uff0c\u5982\u52a0\u6cd5\u3001\u51cf\u6cd5\u3001\u4e58\u6cd5\u3001\u9664\u6cd5\u7b49\u3002<\/p>\n\n\n\n

\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
+<\/code><\/td>\u52a0\u6cd5<\/td>a + b<\/code><\/td><\/tr>
-<\/code><\/td>\u51cf\u6cd5<\/td>a - b<\/code><\/td><\/tr>
*<\/code><\/td>\u4e58\u6cd5<\/td>a * b<\/code><\/td><\/tr>
\/<\/code><\/td>\u9664\u6cd5<\/td>a \/ b<\/code><\/td><\/tr>
%<\/code><\/td>\u53d6\u4f59<\/td>a % b<\/code><\/td><\/tr>
++<\/code><\/td>\u81ea\u589e<\/td>a++<\/code> \u6216 ++a<\/code><\/td><\/tr>
--<\/code><\/td>\u81ea\u51cf<\/td>a--<\/code> \u6216 --a<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u793a\u4f8b\uff1a\u4f7f\u7528\u7b97\u672f\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    int a = 10, b = 5;\n    cout << \"a + b = \" << a + b << endl; \/\/ 15\n    cout << \"a - b = \" << a - b << endl; \/\/ 5\n    cout << \"a * b = \" << a * b << endl; \/\/ 50\n    cout << \"a \/ b = \" << a \/ b << endl; \/\/ 2\n    cout << \"a % b = \" << a % b << endl; \/\/ 0\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
2. \u5173\u7cfb\u8fd0\u7b97\u7b26\uff08Relational Operators\uff09<\/strong><\/h2>\n\n\n\n
\u5173\u7cfb\u8fd0\u7b97\u7b26\u7528\u4e8e\u6bd4\u8f83\u4e24\u4e2a\u503c\u7684\u5173\u7cfb\uff0c\u8fd4\u56de\u5e03\u5c14\u503c true<\/code> \u6216 false<\/code>\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
==<\/code><\/td>\u7b49\u4e8e<\/td>a == b<\/code><\/td><\/tr>
!=<\/code><\/td>\u4e0d\u7b49\u4e8e<\/td>a != b<\/code><\/td><\/tr>
><\/code><\/td>\u5927\u4e8e<\/td>a > b<\/code><\/td><\/tr>
<<\/code><\/td>\u5c0f\u4e8e<\/td>a < b<\/code><\/td><\/tr>
>=<\/code><\/td>\u5927\u4e8e\u6216\u7b49\u4e8e<\/td>a >= b<\/code><\/td><\/tr>
<=<\/code><\/td>\u5c0f\u4e8e\u6216\u7b49\u4e8e<\/td>a <= b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528\u5173\u7cfb\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    int a = 10, b = 5;\n    cout << \"a == b: \" << (a == b) << endl; \/\/ 0 (false)\n    cout << \"a != b: \" << (a != b) << endl; \/\/ 1 (true)\n    cout << \"a > b: \" << (a > b) << endl;   \/\/ 1 (true)\n    cout << \"a < b: \" << (a < b) << endl;   \/\/ 0 (false)\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
3. \u903b\u8f91\u8fd0\u7b97\u7b26\uff08Logical Operators\uff09<\/strong><\/h2>\n\n\n\n
\u903b\u8f91\u8fd0\u7b97\u7b26\u7528\u4e8e\u5728\u6761\u4ef6\u8bed\u53e5\u4e2d\u8fdb\u884c\u5e03\u5c14\u8fd0\u7b97\uff0c\u901a\u5e38\u4e0e if<\/code> \u6216 while<\/code> \u7b49\u6761\u4ef6\u8bed\u53e5\u7ed3\u5408\u4f7f\u7528\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
&&<\/code><\/td>\u903b\u8f91\u4e0e<\/td>a && b<\/code><\/td><\/tr>
||<\/code><\/td>\u903b\u8f91\u6216<\/td>a || b<\/code><\/td><\/tr>
!<\/code><\/td>\u903b\u8f91\u975e<\/td>!a<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528\u903b\u8f91\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    bool a = true, b = false;\n    cout << \"(a && b): \" << (a && b) << endl;  \/\/ 0 (false)\n    cout << \"(a || b): \" << (a || b) << endl;  \/\/ 1 (true)\n    cout << \"(!a): \" << (!a) << endl;          \/\/ 0 (false)\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
4. \u4f4d\u8fd0\u7b97\u7b26\uff08Bitwise Operators\uff09<\/strong><\/h2>\n\n\n\n
\u4f4d\u8fd0\u7b97\u7b26\u7528\u4e8e\u64cd\u4f5c\u6574\u6570\u7c7b\u578b\u7684\u4e8c\u8fdb\u5236\u4f4d\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
&<\/code><\/td>\u6309\u4f4d\u4e0e<\/td>a & b<\/code><\/td><\/tr>
|<\/code><\/td>\u6309\u4f4d\u6216<\/td>a | b<\/code><\/td><\/tr>
^<\/code><\/td>\u6309\u4f4d\u5f02\u6216<\/td>a ^ b<\/code><\/td><\/tr>
~<\/code><\/td>\u6309\u4f4d\u53d6\u53cd<\/td>~a<\/code><\/td><\/tr>
<<<\/code><\/td>\u5de6\u79fb<\/td>a << b<\/code><\/td><\/tr>
>><\/code><\/td>\u53f3\u79fb<\/td>a >> b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528\u4f4d\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    int a = 5, b = 3;\n    cout << \"(a & b): \" << (a & b) << endl;  \/\/ 1\n    cout << \"(a | b): \" << (a | b) << endl;  \/\/ 7\n    cout << \"(a ^ b): \" << (a ^ b) << endl;  \/\/ 6\n    cout << \"(~a): \" << (~a) << endl;        \/\/ -6\n    cout << \"(a << 1): \" << (a << 1) << endl; \/\/ 10\n    cout << \"(a >> 1): \" << (a >> 1) << endl; \/\/ 2\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
5. \u8d4b\u503c\u8fd0\u7b97\u7b26\uff08Assignment Operators\uff09<\/strong><\/h2>\n\n\n\n
\u8d4b\u503c\u8fd0\u7b97\u7b26\u7528\u4e8e\u5c06\u4e00\u4e2a\u503c\u8d4b\u7ed9\u4e00\u4e2a\u53d8\u91cf\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
=<\/code><\/td>\u8d4b\u503c<\/td>a = b<\/code><\/td><\/tr>
+=<\/code><\/td>\u52a0\u6cd5\u8d4b\u503c<\/td>a += b<\/code><\/td><\/tr>
-=<\/code><\/td>\u51cf\u6cd5\u8d4b\u503c<\/td>a -= b<\/code><\/td><\/tr>
*=<\/code><\/td>\u4e58\u6cd5\u8d4b\u503c<\/td>a *= b<\/code><\/td><\/tr>
\/=<\/code><\/td>\u9664\u6cd5\u8d4b\u503c<\/td>a \/= b<\/code><\/td><\/tr>
%=<\/code><\/td>\u53d6\u4f59\u8d4b\u503c<\/td>a %= b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528\u8d4b\u503c\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    int a = 10;\n    a += 5;  \/\/ a = a + 5\n    cout << \"a += 5: \" << a << endl;  \/\/ 15\n    a -= 3;  \/\/ a = a - 3\n    cout << \"a -= 3: \" << a << endl;  \/\/ 12\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
6. \u81ea\u589e\u4e0e\u81ea\u51cf\u8fd0\u7b97\u7b26\uff08Increment and Decrement Operators\uff09<\/strong><\/h2>\n\n\n\n
\u81ea\u589e\uff08++<\/code>\uff09\u548c\u81ea\u51cf\uff08--<\/code>\uff09\u8fd0\u7b97\u7b26\u7528\u4e8e\u589e\u52a0\u6216\u51cf\u5c11\u4e00\u4e2a\u53d8\u91cf\u7684\u503c\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
++<\/code><\/td>\u81ea\u589e<\/td>a++<\/code> \u6216 ++a<\/code><\/td><\/tr>
--<\/code><\/td>\u81ea\u51cf<\/td>a--<\/code> \u6216 --a<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528\u81ea\u589e\u4e0e\u81ea\u51cf\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    int a = 5;\n    cout << \"a++: \" << a++ << endl;  \/\/ \u8f93\u51fa 5\uff0ca \u589e\u52a0\u4e3a 6\n    cout << \"++a: \" << ++a << endl;  \/\/ \u8f93\u51fa 7\n    cout << \"a--: \" << a-- << endl;  \/\/ \u8f93\u51fa 7\uff0ca \u51cf\u5c11\u4e3a 6\n    cout << \"--a: \" << --a << endl;  \/\/ \u8f93\u51fa 5\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
7. \u6761\u4ef6\u8fd0\u7b97\u7b26\uff08\u4e09\u5143\u8fd0\u7b97\u7b26\uff09<\/strong><\/h2>\n\n\n\n
\u6761\u4ef6\u8fd0\u7b97\u7b26\u662f\u4e00\u4e2a\u4e09\u76ee\u8fd0\u7b97\u7b26\uff0c\u6839\u636e\u6761\u4ef6\u5224\u65ad\u8fd4\u56de\u4e0d\u540c\u7684\u503c\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
? :<\/code><\/td>\u6761\u4ef6\u8fd0\u7b97\u7b26<\/td>condition ? a : b<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528\u6761\u4ef6\u8fd0\u7b97\u7b26<\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    int a = 10, b = 5;\n    int result = (a > b) ? a : b;  \/\/ \u5982\u679c a > b\uff0c\u5219\u8fd4\u56de a\uff0c\u5426\u5219\u8fd4\u56de b\n    cout << \"result: \" << result << endl;  \/\/ 10\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
8. \u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26\uff08Type-Casting Operators\uff09<\/strong><\/h2>\n\n\n\n
\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26\u7528\u4e8e\u5c06\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u7684\u503c\u8f6c\u6362\u4e3a\u53e6\u4e00\u79cd\u6570\u636e\u7c7b\u578b\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26<\/th>\u63cf\u8ff0<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
static_cast<\/code><\/td>\u9759\u6001\u7c7b\u578b\u8f6c\u6362<\/td>static_cast<int>(a)<\/code><\/td><\/tr>
dynamic_cast<\/code><\/td>\u52a8\u6001\u7c7b\u578b\u8f6c\u6362<\/td>dynamic_cast<type>(object)<\/code><\/td><\/tr>
const_cast<\/code><\/td>\u5e38\u91cf\u8f6c\u6362<\/td>const_cast<const type>(a)<\/code><\/td><\/tr>
reinterpret_cast<\/code><\/td>\u91cd\u89e3\u91ca\u7c7b\u578b\u8f6c\u6362<\/td>reinterpret_cast<type>(a)<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a\u4f7f\u7528 static_cast<\/code><\/strong><\/h3>\n\n\n\n
#include <iostream>\nusing namespace std;\n\nint main() {\n    double a = 5.7;\n    int b = static_cast<int>(a);  \/\/ \u5c06 double \u8f6c\u6362\u4e3a int\n    cout << \"b: \" << b << endl;   \/\/ \u8f93\u51fa 5\n    return 0;\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u603b\u7ed3<\/strong><\/h2>\n\n\n\n
C++ \u8fd0\u7b97\u7b26\u79cd\u7c7b\u7e41\u591a\uff0c\u5404\u79cd\u8fd0\u7b97\u7b26\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u5728\u7a0b\u5e8f\u4e2d\u5b9e\u73b0\u5404\u79cd\u4e0d\u540c\u7684\u64cd\u4f5c\u3002\u638c\u63e1\u8fd9\u4e9b\u8fd0\u7b97\u7b26\u5e76\u7406\u89e3\u5b83\u4eec\u7684\u4f7f\u7528\u573a\u666f\uff0c\u662f\u9ad8\u6548\u7f16\u5199 C++ \u7a0b\u5e8f\u7684\u57fa\u7840\u3002<\/p>\n\n\n\n
\u8fd0\u7b97\u7b26\u7c7b\u578b<\/th>\u793a\u4f8b<\/th><\/tr><\/thead>
\u7b97\u672f\u8fd0\u7b97\u7b26<\/td>+<\/code>, -<\/code>, *<\/code>, \/<\/code><\/td><\/tr>
\u5173\u7cfb\u8fd0\u7b97\u7b26<\/td>==<\/code>, !=<\/code>, ><\/code>, <<\/code><\/td><\/tr>
\u903b\u8f91\u8fd0\u7b97\u7b26<\/td>&&<\/code>, ||<\/code>, !<\/code><\/td><\/tr>
\u4f4d\u8fd0\u7b97\u7b26<\/td>&<\/code>, |<\/code>, ^<\/code>, <<<\/code><\/td><\/tr>
\u8d4b\u503c\u8fd0\u7b97\u7b26<\/td>=<\/code>, +=<\/code>, -=<\/code><\/td><\/tr>
\u81ea\u589e\/\u81ea\u51cf\u8fd0\u7b97\u7b26<\/td>++<\/code>, --<\/code><\/td><\/tr>
\u6761\u4ef6\u8fd0\u7b97\u7b26<\/td>? :<\/code><\/td><\/tr>
\u7c7b\u578b\u8f6c\u6362\u8fd0\u7b97\u7b26<\/td>static_cast<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n","protected":false},"excerpt":{"rendered":"
C++ \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8fd0\u7b97\u7b26\uff0c\u7528\u4e8e\u8fdb\u884c\u5404\u79cd\u8fd0\u7b97\u548c\u64cd\u4f5c\u3002\u8fd0\u7b97\u7b26\u662f\u6267\u884c\u64cd\u4f5c\u7684\u7b26\u53f7\uff0c\u7528\u6765\u5904\u7406\u6570\u636e\u5e76\u751f\u6210\u7ed3\u679c\u3002\u8fd0\u7b97\u7b26\u7684\u79cd […]<\/p>\n","protected":false},"author":1,"featured_media":3257,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[81],"tags":[],"class_list":["post-3256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-c-"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3256","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=3256"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3256\/revisions"}],"predecessor-version":[{"id":3258,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/3256\/revisions\/3258"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media\/3257"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=3256"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=3256"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=3256"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}