{"id":67087,"date":"2025-05-04T23:37:09","date_gmt":"2025-05-04T15:37:09","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=67087"},"modified":"2025-05-04T23:37:09","modified_gmt":"2025-05-04T15:37:09","slug":"c%e8%bf%90%e7%ae%97%e7%ac%a6%e9%87%8d%e8%bd%bd%e5%ae%9e%e6%88%98%ef%bc%9a%e5%a4%8d%e6%95%b0%e7%b1%bb%e4%b8%8e%e5%88%86%e6%95%b0%e7%b1%bb%e7%9a%84%e5%ae%9e%e7%8e%b0%e4%b8%8e%e4%bc%98%e5%8c%96","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/67087\/","title":{"rendered":"C++\u8fd0\u7b97\u7b26\u91cd\u8f7d\u5b9e\u6218\uff1a\u590d\u6570\u7c7b\u4e0e\u5206\u6570\u7c7b\u7684\u5b9e\u73b0\u4e0e\u4f18\u5316"},"content":{"rendered":"

 <\/p>\n

\u4e00\u3001\u590d\u6570\u7c7b\u4e2d\u7684const\u6210\u5458\u51fd\u6570\u4e0e\u53cb\u5143\u51fd\u6570\u4f7f\u7528<\/h2>\n

\u5728C++\u4e2d\uff0c\u4e3a\u4fdd\u8bc1\u7c7b\u4e2d\u67d0\u4e9b\u6210\u5458\u51fd\u6570\u4e0d\u4fee\u6539\u5bf9\u8c61\u72b6\u6001\uff0c\u53ef\u5728\u51fd\u6570\u540e\u52a0 const<\/code> \u5173\u952e\u5b57\u3002\u4f8b\u5982\uff1a<\/p>\n

class Complex {\r\npublic:\r\n    double real, imag;\r\n    double getMagnitude() const {\r\n        return sqrt(real * real + imag * imag);\r\n    }\r\n};\r\n<\/code><\/pre>\n
\u4f7f\u7528 const<\/code> \u53ef\u4ee5\u9632\u6b62\u610f\u5916\u4fee\u6539\u7c7b\u5c5e\u6027\uff0c\u63d0\u5347\u4ee3\u7801\u5b89\u5168\u6027\u3002<\/p>\n
\u53cb\u5143\u51fd\u6570\u7b80\u5316\u8bbf\u95ee\u79c1\u6709\u5c5e\u6027<\/h3>\n
\u5f53\u9700\u8981\u91cd\u8f7d >><\/code> \u548c <<<\/code> \u8fd0\u7b97\u7b26\u8bbf\u95ee\u7c7b\u7684\u79c1\u6709\u6210\u5458\u65f6\uff0c\u53cb\u5143\u51fd\u6570\u63d0\u4f9b\u4e86\u4fbf\u5229\u65b9\u5f0f\u3002\u4f8b\u5982\uff1a<\/p>\n
class Complex {\r\n    friend std::istream& operator>>(std::istream& is, Complex& c);\r\n    friend std::ostream& operator<<(std::ostream& os, const Complex& c);\r\nprivate:\r\n    double real, imag;\r\n};\r\n<\/code><\/pre>\n
\u8fd9\u6837\u53ef\u4ee5\u76f4\u63a5\u5728\u51fd\u6570\u4f53\u4e2d\u8bbf\u95ee real<\/code> \u548c imag<\/code>\uff0c\u4e0d\u5fc5\u4f9d\u8d56 setter \u6216 getter\u3002<\/p>\n
\u6bd4\u8f83\u590d\u6570\u5927\u5c0f\uff1a\u5229\u7528\u6a21\u957f<\/h3>\n
bool Complex::operator==(const Complex& t) const {\r\n    return sqrt(real * real + imag * imag) == sqrt(t.real * t.real + t.imag * t.imag);\r\n}\r\n<\/code><\/pre>\n
\u82e5\u9700\u8981\u5b9e\u73b0 !=<\/code>\u3001><\/code> \u7b49\u64cd\u4f5c\uff0c\u53ea\u9700\u590d\u7528\u5df2\u6709\u903b\u8f91\uff0c\u907f\u514d\u5197\u4f59\u4ee3\u7801\u3002<\/p>\n
\n
\u4e8c\u3001\u5206\u6570\u7c7b\uff1a\u901a\u7528\u7684\u6570\u503c\u5904\u7406\u7ed3\u6784<\/h2>\n
\u81ea\u5b9a\u4e49\u5206\u6570\u7c7b\u5e38\u7528\u4e8e\u6570\u5b66\u8fd0\u7b97\u6a21\u62df\uff0c\u4ee5\u4e0b\u4e3a\u57fa\u672c\u7ed3\u6784\u8bbe\u8ba1\u8981\u70b9\uff1a<\/p>\n
\u6784\u9020\u51fd\u6570\u4e0e\u8f93\u5165\u6821\u9a8c<\/h3>\n
class Fraction {\r\npublic:\r\n    Fraction(int num = 0, int den = 1) {\r\n        if (den == 0) throw std::invalid_argument(\"Denominator cannot be zero\");\r\n        numerator = num;\r\n        denominator = den;\r\n        simplify();\r\n    }\r\nprivate:\r\n    int numerator, denominator;\r\n    void simplify(); \/\/ \u5b9e\u73b0\u7ea6\u5206\r\n};\r\n<\/code><\/pre>\n
\u8fd0\u7b97\u7b26\u91cd\u8f7d\uff1a\u52a0\u51cf\u4e58\u9664\u4e00\u5e94\u4ff1\u5168<\/h3>\n
Fraction operator+(const Fraction& f) const {\r\n    int num = numerator * f.denominator + f.numerator * denominator;\r\n    int den = denominator * f.denominator;\r\n    return Fraction(num, den);\r\n}\r\n<\/code><\/pre>\n
\u5176\u5b83\u8fd0\u7b97\uff08- * \/\uff09\u7c7b\u4f3c\uff0c\u6ce8\u610f\u5206\u6bcd\u4e0d\u80fd\u4e3a0\uff0c\u4e14\u9700\u8981\u5bf9\u7ed3\u679c\u7ea6\u5206\u3002<\/p>\n
\u91cd\u8f7d\u8f93\u5165\u8f93\u51fa\u8fd0\u7b97\u7b26<\/h3>\n
std::istream& operator>>(std::istream& is, Fraction& f) {\r\n    int num, den;\r\n    is >> num >> den;\r\n    f = Fraction(num, den);\r\n    return is;\r\n}\r\n\r\nstd::ostream& operator<<(std::ostream& os, const Fraction& f) {\r\n    if (f.denominator == 1 || f.numerator == 0)\r\n        os << f.numerator;\r\n    else\r\n        os << f.numerator << \"\/\" << f.denominator;\r\n    return os;\r\n}\r\n<\/code><\/pre>\n
\u8fd9\u4e9b\u5b9e\u73b0\u4e0d\u4f9d\u8d56\u53cb\u5143\u51fd\u6570\uff0c\u4f7f\u7c7b\u8bbe\u8ba1\u66f4\u52a0\u5c01\u88c5\u3001\u5b89\u5168\u3002<\/p>\n
\n
\u4e09\u3001\u793a\u4f8b main \u51fd\u6570\u4e0e\u8f93\u51fa\u683c\u5f0f<\/h2>\n
int main() {\r\n    Fraction x1, x2(2,7), x3, y1, y2;\r\n    std::cin >> x3 >> y1 >> y2;\r\n\r\n    Fraction z1 = x3 + y1;\r\n    Fraction z2 = x3 - y1;\r\n    Fraction z3 = x3 * y2;\r\n    Fraction z4 = x3 \/ y2;\r\n\r\n    x1.setData(5, 7);\r\n    Fraction z5 = x1 + x2;\r\n\r\n    std::cout << z1 << \"\\n\" << z2 << \"\\n\" << z3 << \"\\n\" << z4 << \"\\n\" << z5 << \"\\n\";\r\n\r\n    return 0;\r\n}\r\n<\/code><\/pre>\n
\u8f93\u51fa\u683c\u5f0f\u63a7\u5236\u903b\u8f91\u5185\u7f6e\u5728 <<<\/code> \u8fd0\u7b97\u7b26\u4e2d\uff0c\u786e\u4fdd\u7b80\u6d01\u3001\u89c4\u8303\u7684\u7ec8\u7aef\u663e\u793a\u3002<\/p>\n
\n
\u56db\u3001\u5728\u7f8e\u56fd\u670d\u52a1\u5668\u73af\u5883\u4e0b\u7684\u90e8\u7f72\u5efa\u8bae<\/h2>\n
\u82e5\u60a8\u7684\u9879\u76ee\u9700\u8981\u5904\u7406\u5927\u91cfC++\u8ba1\u7b97\u4efb\u52a1\u3001\u540e\u7aef\u670d\u52a1\u90e8\u7f72\u6216\u7b97\u6cd5\u5f15\u64ce\u642d\u5efa\uff0c\u63a8\u8350\u9009\u62e9\u9ad8\u6027\u80fd\u7684\u7f8e\u56fd\u670d\u52a1\u5668<\/strong>\uff0c\u7279\u522b\u662f\u5177\u5907\u4f4e\u5ef6\u8fdf\u3001\u56fd\u9645\u5e26\u5bbd\u5145\u8db3\u7684\u7f8e\u56fdVPS<\/strong>\u4e0e\u7f8e\u56fd\u4e91\u670d\u52a1\u5668<\/strong>\u4ea7\u54c1\u3002\u6211\u4eec\u63d0\u4f9b\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u53ef\u7075\u6d3b\u914d\u7f6e\u3001\u5feb\u901f\u90e8\u7f72\uff0c\u9002\u914d\u4ece\u5f00\u53d1\u6d4b\u8bd5\u5230\u5546\u7528\u7ea7\u90e8\u7f72\u7684\u5404\u7c7b\u573a\u666f\u3002<\/p>\n
\n
\u7ed3\u8bed<\/h2>\n
\u901a\u8fc7\u672c\u7bc7\u5185\u5bb9\uff0c\u6211\u4eec\u4e0d\u4ec5\u638c\u63e1\u4e86\u5982\u4f55\u5728C++\u4e2d\u5b9e\u73b0\u590d\u6570\u4e0e\u5206\u6570\u7c7b\u7684\u8fd0\u7b97\u7b26\u91cd\u8f7d\uff0c\u8fd8\u63d0\u5347\u4e86\u4ee3\u7801\u7684\u53ef\u7ef4\u62a4\u6027\u4e0e\u5de5\u7a0b\u5316\u6c34\u5e73\u3002\u65e0\u8bba\u662f\u5b66\u4e60C++\u7684\u8fdb\u9636\u8005\uff0c\u8fd8\u662f\u4f01\u4e1a\u9879\u76ee\u5f00\u53d1\u4eba\u5458\uff0c\u5728\u6784\u5efa\u9ad8\u6027\u80fd\u7cfb\u7edf\u65f6\uff0c\u9009\u62e9\u5408\u9002\u7684\u57fa\u7840\u67b6\u6784\u4e5f\u81f3\u5173\u91cd\u8981\u3002\u63a8\u8350\u5c06\u9879\u76ee\u90e8\u7f72\u81f3\u7f8e\u56fd\u72ec\u7acb\u670d\u52a1\u5668<\/strong><\/a>\u4e0a\uff0c\u4eab\u53d7\u66f4\u9ad8\u7684\u7a33\u5b9a\u6027\u4e0e\u8fd0\u884c\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
  \u4e00\u3001\u590d\u6570\u7c7b\u4e2d\u7684const\u6210\u5458\u51fd\u6570\u4e0e\u53cb\u5143\u51fd\u6570\u4f7f\u7528 \u5728C++\u4e2d\uff0c\u4e3a\u4fdd\u8bc1\u7c7b\u4e2d\u67d0\u4e9b\u6210\u5458\u51fd\u6570\u4e0d\u4fee\u6539\u5bf9\u8c61\u72b6\u6001\uff0c\u53ef\u5728\u51fd\u6570\u540e\u52a0 const \u5173\u952e\u5b57\u3002\u4f8b\u5982\uff1a class Complex { public: double real, imag; double getMagnitude() const { return sqrt(real * real + imag * imag); } }; \u4f7f\u7528 const \u53ef\u4ee5\u9632\u6b62\u610f\u5916\u4fee\u6539\u7c7b\u5c5e\u6027\uff0c\u63d0\u5347\u4ee3\u7801\u5b89\u5168\u6027\u3002 \u53cb\u5143\u51fd\u6570\u7b80\u5316\u8bbf\u95ee\u79c1\u6709\u5c5e\u6027 \u5f53\u9700\u8981\u91cd\u8f7d >> \u548c << \u8fd0\u7b97\u7b26\u8bbf\u95ee\u7c7b\u7684\u79c1\u6709\u6210\u5458\u65f6\uff0c\u53cb\u5143\u51fd\u6570\u63d0\u4f9b\u4e86\u4fbf\u5229\u65b9\u5f0f\u3002\u4f8b\u5982\uff1a class Complex { friend std::istream& operator>>(std::istream& is, Complex& c); friend std::ostream& operator<<(std::ostream& os, const Complex& c); private: double real, imag; […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-67087","post","type-post","status-publish","format-standard","hentry","category-coding"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67087","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=67087"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67087\/revisions"}],"predecessor-version":[{"id":67089,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/67087\/revisions\/67089"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=67087"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=67087"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=67087"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}