{"id":202,"date":"2024-05-02T19:07:36","date_gmt":"2024-05-02T11:07:36","guid":{"rendered":"http:\/\/www.cmd137blog.top\/?p=202"},"modified":"2024-05-02T19:07:38","modified_gmt":"2024-05-02T11:07:38","slug":"bjfuoj-c%e7%a8%8b%e5%ba%8f%e8%ae%be%e8%ae%a1-%e5%ae%9e%e9%aa%8c1-%e7%b1%bb%e4%b8%8e%e5%af%b9%e8%b1%a1","status":"publish","type":"post","link":"http:\/\/www.cmd137blog.top\/?p=202","title":{"rendered":"BJFUOJ-C++\u7a0b\u5e8f\u8bbe\u8ba1-\u5b9e\u9a8c1-\u7c7b\u4e0e\u5bf9\u8c61"},"content":{"rendered":"\n<h1 class=\"wp-block-heading\">\u5b8c\u6574\u9898\u76ee\u89c1<a href=\"https:\/\/blog.csdn.net\/CMD138\/article\/details\/138396430?spm=1001.2014.3001.5502\">BJFUOJ-C++\u7a0b\u5e8f\u8bbe\u8ba1-\u5b9e\u9a8c1-\u7c7b\u4e0e\u5bf9\u8c61-CSDN\u535a\u5ba2<\/a><\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">A \u8ba1\u7b97\u5706\u9762\u79ef<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u9898\u76ee\u63cf\u8ff0<\/h2>\n\n\n\n<p>\u7f16\u5199\u4e00\u4e2a\u5706\u7c7bCircle\uff0c\u5b9e\u73b0\u534a\u5f84\u7684\u8f93\u5165\u3001\u9762\u79ef\u7684\u8ba1\u7b97\u548c\u8f93\u51fa\u3002Circle\u7c7b\u7684\u5b9a\u4e49\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>class Circle\n{\nprivate:\n    double r;\npublic:\n    void input();\n    double area() const;\n    void output() const;\n};<\/code><\/pre>\n\n\n\n<p>\u8981\u6c42\u5b9e\u73b0Circle\u7c7b\u76843\u4e2a\u6210\u5458\u51fd\u6570\uff0c\u5b8c\u6210\u8f93\u5165\u534a\u5f84\u3001\u8ba1\u7b97\u9762\u79ef\u548c\u8f93\u51fa\u9762\u79ef\uff1b\u5e76\u6309\u7167\u9898\u76ee\u7684\u8f93\u5165\u548c\u8f93\u51fa\u63cf\u8ff0\u6d4b\u8bd5Circle\u7c7b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u5165<\/h3>\n\n\n\n<p>\u8f93\u5165\u4e00\u884c\uff0c\u8f93\u5165\u5706\u7684\u534a\u5f84(double\u7c7b\u578b)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa<\/h3>\n\n\n\n<p>\u8f93\u51fa\u4e00\u884c\uff0c\u8f93\u51fa\u5706\u7684\u9762\u79ef(\u4fdd\u7559\u5c0f\u6570\u70b9\u540e\u4e24\u4f4d)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u5165\u6837\u4f8b 1<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>3<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f93\u51fa\u6837\u4f8b1<\/h3>\n\n\n\n<pre class=\"wp-block-code\"><code>28.27<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u63d0\u793a<\/h3>\n\n\n\n<p>1\u3001\u5728\u8f93\u51fa\u9762\u79ef\u524d\u4f7f\u7528\u5982\u4e0b\u8bed\u53e5\uff1acout&lt;&lt;setiosflags(ios::fixed)&lt;&lt;setprecision(2);\u6765\u8bbe\u7f6e\u8f93\u51fa\u683c\u5f0f\uff0c\u9700\u8981\u5305\u542biomanip\u5934\u6587\u4ef6<\/p>\n\n\n\n<p>2\u3001\u4f7f\u7528acos(-1.0)\u6765\u5f97\u5230\u5706\u5468\u7387\u7684\u7cbe\u786e\u503c\uff0c\u53ef\u5c06\u5176\u8bbe\u7f6e\u4e3a\u5e38\u91cf\uff0c\u6bd4\u5982\uff1aconst double PI=acos\uff08-1.0\uff09\uff0c\u9700\u8981\u5305\u542bcmath\u5934\u6587\u4ef6<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n#include&lt;iomanip&gt;\n#include&lt;cmath&gt;\nusing namespace std;\n\nconst double PI = acos(-1.0);\n\nclass Circle\n{\nprivate:\n    double r;\npublic:\n    void input();\n    double area() const;\n    void output() const;\n};\n\nvoid Circle::input(){\n    cin&gt;&gt;r; \n}\n\ndouble Circle::area() const{\n    return PI*r*r;          \n}\n\nvoid Circle::output() const{\n    cout&lt;&lt;setiosflags(ios::fixed)&lt;&lt;setprecision(2)&lt;&lt;area();\n}\n\nint main(){\n    Circle c;\n    c.input();\n    c.output();\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u7b80\u5355\u7c7b\u4e0e\u5bf9\u8c61\u77e5\u8bc6\u3002<br>\u201c\uff1a\uff1a\u201d\u7684\u4f7f\u7528<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">B \u8fc7\u9053\u548c\u6805\u680f\u7684\u9020\u4ef7<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n\nusing namespace std;\n\nclass Rectangle\n{\n\nprivate:\n  double length; \/\/\u957f\n  double width; \/\/\u5bbd\n\npublic:\n  Rectangle(double Length,double Width);\n  double Area() const; \/\/\u83b7\u53d6\u9762\u79ef\n  double Perimeter() const;\/\/\u83b7\u53d6\u5468\u957f\n};\n\nRectangle::Rectangle(double Length=10.,double Width=5.){\n    length=Length;\n    width=Width;\n}\n\ndouble Rectangle::Area() const{\n    return length*width;\n}\n\ndouble Rectangle::Perimeter() const{\n    return length*2+width*2;\n}\n\nint main(){\n    double l1,w1;\n    cin&gt;&gt;l1&gt;&gt;w1;\n    Rectangle R1(l1,w1);\n    Rectangle R2(l1+3.0,w1+3.0);\n\n    cout&lt;&lt;R2.Perimeter()*50&lt;&lt;endl&lt;&lt;(R2.Area()-R1.Area())*240;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u6784\u9020\u51fd\u6570\u5b9a\u4e49\u4e0e\u5b9e\u73b0\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">C \u56fe\u4e66\u7c7b<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n#include&lt;cstring&gt;\nusing namespace std;\n\nclass Book\n{\nprivate:\nchar * name; \/\/**\u4e66\u540d\nchar * author; \/\/**\u4f5c\u8005\nint sale; \/\/**\u9500\u552e\u91cf\n\npublic:\nBook(); \/\/**\u65e0\u53c2\u6784\u9020\u51fd\u6570\nBook(const char *,const char *, int); \/\/**\u6709\u53c2\u6784\u9020\u51fd\u6570\nBook(const Book &amp;); \/\/**\u62f7\u8d1d\u6784\u9020\u51fd\u6570\nvoid print() const; \/\/**\u663e\u793a\u6570\u636e\n~Book(); \/\/**\u6790\u6784\u51fd\u6570\n};\n\nBook::Book(){\n    name = new char&#91;100]; \n    strcpy(name,\"No name\");\n\n    author = new char&#91;100];\n    strcpy(author,\"No author\");\n\n    sale = 0;\n}\n\nBook::Book(const char *n, const char *a, int s) {\n    name = new char&#91;strlen(n) + 1];\n    strcpy(name, n);\n\n    author = new char&#91;strlen(a) + 1];\n    strcpy(author, a);\n\n    sale = s;\n}\n\nBook::Book(const Book &amp; tb){\n    name = new char&#91;strlen(tb.name) + 1];\n    strcpy(name, tb.name);\n\n    author = new char&#91;strlen(tb.author) + 1];\n    strcpy(author, tb.author);\n\n    sale = tb.sale;\n}\n\nBook::~Book(){\n    delete&#91;] name;\n    delete&#91;] author;\n}\n\nvoid Book::print() const{\n    cout&lt;&lt;\"Name: \"&lt;&lt;name&lt;&lt;'\\t'&lt;&lt;\"Author: \"&lt;&lt;author&lt;&lt;'\\t'&lt;&lt;\"Sale: \"&lt;&lt;sale&lt;&lt;endl;\n}\n\nint main(){\n    char tn&#91;100];\n    char ta&#91;100];\n    int ts;\n    cin.getline(tn,100);\n    cin.getline(ta,100);\n    cin&gt;&gt;ts;\n\n    if (strcmp(tn,\"-1\") == 0 &amp;&amp; strcmp(ta,\"-1\") == 0 &amp;&amp; ts == -1) {\n        Book bk;  \n        bk.print();\n    } else if (strcmp(tn, \"0\") == 0 &amp;&amp; strcmp(ta, \"0\") == 0 &amp;&amp; ts == 0) {\n        Book bk1;  \n        Book bk2(bk1);  \n        bk2.print();\n    } else {\n        Book bk(tn,ta,ts);  \n        bk.print();\n    }\n\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u65e0\u53c2\u6784\u9020\u51fd\u6570\/\u6709\u53c2\u6784\u9020\u51fd\u6570\/\u62f7\u8d1d\u6784\u9020\u51fd\u6570\uff1b<br>\u6790\u6784\u51fd\u6570\uff08new\u4e0edelete\u7684\u4f7f\u7528\uff09\uff1b<br>C++\u4e2d\u7684 &lt; cstring &gt;<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">D \u540d\u5355\u7c7b<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h1>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n\nusing namespace std;\n\nclass Date    \/\/\u65e5\u671f\u7c7b\n{\nprivate:\n    int Date_year;    \/\/\u5e74\n    int Date_month;    \/\/\u6708\n    int Date_day;    \/\/\u65e5\npublic:\n    Date(int year=2000, int month=1, int day=1);\n    void show() const;    \/\/\u4ee5\u201c\u5e74-\u6708-\u65e5\u201d\u683c\u5f0f\u8f93\u51fa\u5e74\u6708\u65e5\n};\n\nDate::Date(int year,int month,int day)\n{\n    Date_year=year;\n    Date_month=month;\n    Date_day=day;\n}\n\nvoid Date::show() const\n{\n    cout&lt;&lt;Date_year&lt;&lt;\"-\"&lt;&lt;Date_month&lt;&lt;\"-\"&lt;&lt;Date_day;\n}\n\nclass Croster    \/\/\u540d\u5355\u7c7b\n{\nprivate:\n    string name;\n    Date birthday;\npublic:\n    Croster();\n    Croster(string name,int year,int month,int day);\n    Croster(string name, Date date);\n    void show() const;\/\/\u663e\u793a\u59d3\u540d\u548c\u51fa\u751f\u65e5\u671f\n};\n\nCroster::Croster():name(\"NULL\"),birthday(0,0,0)\n{\n}\n\nCroster::Croster(string name,int year,int month,int day):birthday(year,month,day)\n{\n    this-&gt;name=name;\n}\n\nCroster::Croster(string name,Date date):name(name),birthday(date)\n{\n}\n\nvoid Croster::show() const\n{\n    cout&lt;&lt;\"Name: \"&lt;&lt;name&lt;&lt;\", \"&lt;&lt;\"Birthday: \";\n    birthday.show();\n}\n\nint main()\n{\n    int cmd=0;\n    while(1){\n        cin&gt;&gt;cmd;\n        if(cmd==0){\n            Croster c0;\n            c0.show();\n        }else if(cmd==1){\n            string n;\n            int y,m,d;\n            cin&gt;&gt;n&gt;&gt;y&gt;&gt;m&gt;&gt;d;\n            Croster c1(n,y,m,d);\n            c1.show();\n        }else if(cmd==2){\n            string n;\n            int y,m,d;\n            cin&gt;&gt;n&gt;&gt;y&gt;&gt;m&gt;&gt;d;\n            Date tdate(y,m,d);\n            Croster c2(n,tdate);\n            c2.show();\n        }else if(cmd==-1){\n            break;\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u6784\u9020\u51fd\u6570\u7684\u91cd\u8f7d\uff1b<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">E \u53cb\u5143\u7c7b<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n\nusing namespace std;\n\nclass Subject    \/\/\u9009\u8bfe\u7c7b\n{\nprivate:\n    double score&#91;3];                \/\/3\u95e8\u8bfe\u6210\u7ee9\n    const int SMath, SEng, SCpp;    \/\/3\u95e8\u8bfe\u7684\u5b66\u5206\uff0c\u5206\u522b\u4e3a4\u30012\u30012\npublic:\n    Subject(double score_math = 0, double score_eng = 0, double score_cpp = 0);\n    void Input();            \/\/\u8f93\u51653\u95e8\u8bfe\u7684\u6210\u7ee9\n    friend class Student;    \/\/\u53cb\u5143\u7c7b\n};\n\nSubject::Subject(double score_math, double score_eng, double score_cpp):SMath(4),SEng(2),SCpp(2)\n{\n    score&#91;0]=score_math;\n    score&#91;1]=score_eng;\n    score&#91;2]=score_cpp;\n}\n\nvoid Subject::Input()\n{\n    cin&gt;&gt;score&#91;0]&gt;&gt;score&#91;1]&gt;&gt;score&#91;2];\n}\n\nclass Student\n{\nprivate:\n    string ID;        \/\/\u5b66\u53f7\n    string name;       \/\/\u59d3\u540d\n    double GPA;        \/\/\u5e73\u5747\u5b66\u5206\u79ef=\uff08\u6210\u7ee91x\u5b66\u52061+\u6210\u7ee92x\u5b66\u52062+\u6210\u7ee93x\u5b66\u52063\uff09\/\uff08\u5b66\u52061+\u5b66\u52062+\u5b66\u52063\uff09\npublic:\n    Student(string id = \"00000\", string na = \"Noname\");\n    void CalculateGPA(const Subject &amp;sub);    \/\/\u8ba1\u7b97\u5e73\u5747\u5b66\u5206\u79ef\n    void Input();                            \/\/\u8f93\u5165\u5b66\u53f7\u548c\u59d3\u540d\n    void Show(const Subject &amp;sub)const;        \/\/\u8f93\u51fa\u6240\u6709\u4fe1\u606f\n};\n\nStudent::Student(string id,string na)\n{\n    ID=id;\n    name=na;\n} \n\nvoid Student::CalculateGPA(const Subject &amp;sub)\n{\n    GPA=(sub.score&#91;0]*sub.SMath+sub.score&#91;1]*sub.SEng+sub.score&#91;2]*sub.SCpp)\/((sub.SMath+sub.SEng+sub.SCpp)*1.0);\n}\n\nvoid Student::Input()\n{\n    cin&gt;&gt;ID&gt;&gt;name;\n}\n\nvoid Student::Show(const Subject &amp;sub)const\n{\n    cout&lt;&lt;\"ID: \"&lt;&lt;ID&lt;&lt;\", Name: \"&lt;&lt;name&lt;&lt;endl;\n    cout&lt;&lt;\"Math Eng Cpp\"&lt;&lt;endl;\n    cout&lt;&lt;sub.score&#91;0]&lt;&lt;\" \"&lt;&lt;sub.score&#91;1]&lt;&lt;\" \"&lt;&lt;sub.score&#91;2]&lt;&lt;endl;\n    cout&lt;&lt;\"GPA: \"&lt;&lt;GPA&lt;&lt;endl;\n}\n\nint main()\n{\n    int n;        \/\/\u5b66\u751f\u4eba\u6570\n    cin &gt;&gt; n;\n    Student *stu = new Student&#91;n];\n    Subject *sub = new Subject&#91;n];\n    for (int i = 0; i &lt; n; i++)\n    {\n        stu&#91;i].Input();\n        sub&#91;i].Input();\n    }\n    for (int i = 0; i &lt; n; i++)\n    {\n        stu&#91;i].CalculateGPA(sub&#91;i]);\n        stu&#91;i].Show(sub&#91;i]);\n    }\n    delete&#91;] stu;\n    delete&#91;] sub;\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u5f88\u666e\u901a\u7684\u4e00\u9053\u9898\u2026<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">F \u65c5\u9986\u4eba\u6570\u7edf\u8ba1<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n\nusing namespace std;\n\nclass Hotel{\nprivate:\n    string name;\n    int id;\npublic:\n    static int total;\n    void add(string n);\n    static int getTotal();  \n    string getName();\n    void print();   \n};\n\n\/\/\u9759\u6001\u6570\u636e\u6210\u5458\u5fc5\u987b\u5728\u7c7b\u5916\u5b9a\u4e49\u548c\u521d\u59cb\u5316\uff0c\u4ee5\u53ca\u5728\u7c7b\u5185\u58f0\u660e\u3002\nint Hotel::total=0;\n\nvoid Hotel::add(string n)\n{\n    name=n;\n    total++;\n    id=total;\n}\n\nint Hotel::getTotal()\n{\n    return total;\n}\n\nstring Hotel::getName()\n{\n    return name;\n}\n\nvoid Hotel::print()\n{\n    cout&lt;&lt;id&lt;&lt;\" \"&lt;&lt;name&lt;&lt;\" \"&lt;&lt;total;    \n}\n\nint main(){\n    Hotel h&#91;100];\n    h&#91;0].add(\"Susan\");\n    h&#91;1].add(\"Peter\");\n    h&#91;2].add(\"John\");\n    h&#91;3].add(\"Mary\");\n    h&#91;4].add(\"Alice\");\n    string name;\n    cin&gt;&gt;name;\n\n    for(int i=0;i&lt;Hotel::getTotal();i++)\n    {\n        if(h&#91;i].getName()==name)\n        {\n            h&#91;i].print();\n            break;\n        }\n    }\n\n    return 0;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u00b7\u9759\u6001\u6570\u636e\u6210\u5458\uff1a<br>\u9759\u6001\u6570\u636e\u6210\u5458\u662f\u5c5e\u4e8e\u7c7b\u7684\u6210\u5458\uff0c\u800c\u4e0d\u662f\u5c5e\u4e8e\u7c7b\u7684\u5b9e\u4f8b\u6216\u5bf9\u8c61\u7684\u6210\u5458\u3002\u9759\u6001\u6570\u636e\u6210\u5458\u5728\u7c7b\u7684\u6240\u6709\u5b9e\u4f8b\u4e4b\u95f4\u5171\u4eab\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u7c7b\u540d\u6765\u8bbf\u95ee\uff0c\u800c\u4e0d\u662f\u901a\u8fc7\u7c7b\u7684\u5b9e\u4f8b\u6216\u5bf9\u8c61\u6765\u8bbf\u95ee\u3002<br>\u9759\u6001\u6570\u636e\u6210\u5458\u901a\u5e38\u7528\u4e8e\u8ddf\u8e2a\u7c7b\u7684\u5171\u4eab\u6570\u636e\u6216\u72b6\u6001\uff0c\u6bd4\u5982\u8ba1\u6570\u5668\u3001\u5e38\u91cf\u7b49\u3002\u5728\u7c7b\u58f0\u660e\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5173\u952e\u5b57static\u6765\u58f0\u660e\u9759\u6001\u6570\u636e\u6210\u5458\u3002<br>\u9759\u6001\u6570\u636e\u6210\u5458\u5fc5\u987b\u5728\u7c7b\u5916\u5b9a\u4e49\u548c\u521d\u59cb\u5316\uff0c\u4ee5\u53ca\u5728\u7c7b\u5185\u58f0\u660e\u3002<br>\u00b7\u9759\u6001\u51fd\u6570\u6210\u5458\uff1a<br>\u9759\u6001\u6210\u5458\u51fd\u6570\u662f\u5c5e\u4e8e\u6574\u4e2a\u7c7b\uff0c\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7\u7c7b\u540d\u8c03\u7528\u3002<br>\u65e0\u6cd5\u8bbf\u95ee\u975e\u9759\u6001\u6570\u636e\u6210\u5458\u6216\u975e\u9759\u6001\u6210\u5458\u51fd\u6570\u3002<br>\u9759\u6001\u6210\u5458\u51fd\u6570\u7684\u58f0\u660e\u548c\u5b9a\u4e49\u65b9\u5f0f\u4e0e\u975e\u9759\u6001\u6210\u5458\u51fd\u6570\u7c7b\u4f3c\uff0c\u4f46\u5728\u58f0\u660e\u548c\u5b9a\u4e49\u65f6\u9700\u8981\u4f7f\u7528static\u5173\u952e\u5b57\u6807\u8bc6\u3002\u540c\u65f6\uff0c\u9759\u6001\u6210\u5458\u51fd\u6570\u53ef\u4ee5\u88ab\u7ee7\u627f\u5e76\u91cd\u8f7d\u3002<\/p>\n\n\n\n<p>\u00b7\u7c7b\u7684\u6570\u7ec4\uff1b<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">G TestConstClass<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">\u7b54\u6848\uff1a<\/h2>\n\n\n\n<pre class=\"wp-block-code\"><code>#include&lt;iostream&gt;\n#include&lt;string&gt;\nusing namespace std;\n\nclass TestConstClass{\nprivate:\n    string test;\npublic:\n    void set(string t);\n    string get()  const;\n};\n\nvoid TestConstClass::set(string t)\n{\n    test=t;\n}\n\nstring TestConstClass::get() const\n{\n    return test;\n}\n\nvoid print (const TestConstClass &amp; tcs) {\n\ncout &lt;&lt; tcs.get()&lt;&lt;'\\n';\n\n}  \n\nint main() {\n\nstring tmp;\n\nTestConstClass tcs;\n\nwhile(cin&gt;&gt;tmp){\n\ntcs.set(tmp);\n\nprint(tcs);\n\n}\n\nreturn 0;\n\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8981\u77e5\u8bc6\u70b9\uff1a<\/h2>\n\n\n\n<p>\u5e38\u6210\u5458\u51fd\u6570\uff1a<br>\u58f0\u660e\u683c\u5f0f\uff1a \u7c7b\u578b \u51fd\u6570\u540d(\u5f62\u53c2\u8868) const\uff1b<br>\uff081\uff09\u662f\u53ea\u8bfb\u51fd\u6570\uff0c\u4e0d\u80fd\u4fee\u6539\u6570\u636e\u6210\u5458\u7684\u503c\uff0c\u4e5f\u4e0d\u80fd\u8c03\u7528\u8be5\u7c7b\u4e2d\u975e\u5e38\u6210\u5458\u51fd\u6570\u3002<br>\uff082\uff09const\u5173\u952e\u5b57\u662f\u51fd\u6570\u7c7b\u578b\u7684\u4e00\u90e8\u5206\uff0c\u5b9a\u4e49\u90e8\u5206\u4e2d\u4e5f\u8981\u5e26const\u5173\u952e\u5b57\u3002<br>\uff083\uff09const\u5173\u952e\u5b57\u53ef\u4ee5\u533a\u5206\u91cd\u8f7d\u3002<br>\uff084\uff09\u80fd\u88ab\u5e38\u5bf9\u8c61\u548c\u4e00\u822c\u5bf9\u8c61\u8c03\u7528\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b8c\u6574\u9898\u76ee\u89c1BJFUOJ-C++\u7a0b\u5e8f\u8bbe\u8ba1-\u5b9e\u9a8c1-\u7c7b\u4e0e\u5bf9\u8c61-CSDN\u535a\u5ba2 A \u8ba1\u7b97\u5706\u9762\u79ef \u9898\u76ee\u63cf\u8ff0 \u7f16\u5199\u4e00\u4e2a\u5706\u7c7b [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[29,5],"tags":[23,21,30],"class_list":["post-202","post","type-post","status-publish","format-standard","hentry","category-c","category-5","tag-c","tag-21","tag-30"],"_links":{"self":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/202","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=202"}],"version-history":[{"count":1,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/202\/revisions"}],"predecessor-version":[{"id":203,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=\/wp\/v2\/posts\/202\/revisions\/203"}],"wp:attachment":[{"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=202"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=202"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.cmd137blog.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=202"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}