Which is the correct output of the following program. #include <iostream> #include <string> using namespace std; class ObjectCount{ private: static int objCount; public: ObjectCount() { objCount++; } static void print(const string& msg = "") { if(msg.size() != 0) cout << msg << ": "; cout << "objCount = " << objCount << endl;   } ~ObjectCount() { objCount–; } }; int ObjectCount::objCount = 0; ObjectCount f(ObjectCount oc) { return oc; } int main(){ ObjectCount o1; ObjectCount::print("after construction of o1"); ObjectCount o2 = f(o1); ObjectCount::print("after call f()"); }-笔试面试资料

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答案:

Which is the correct output of the following program.
#include <iostream> #include <string> using namespace std;  class ObjectCount{ private:     static int objCount; public:     ObjectCount() { objCount++; }     static void print(const string& msg = "") {         if(msg.size() != 0) cout << msg << ": ";         cout << "objCount = " << objCount << endl;     }         ~ObjectCount() { objCount--; } };  int ObjectCount::objCount = 0;  ObjectCount f(ObjectCount oc) {     return oc; }  int main(){     ObjectCount o1;     ObjectCount::print("after construction of o1");     ObjectCount o2 = f(o1);     ObjectCount::print("after call f()"); }

Which is the correct output of the following program.    #include &lt;iostream&gt; #include &lt;string&gt; using namespace std;  class ObjectCount{ private:     static int objCount; public:     ObjectCount() { objCount++; }     static void print(const string&amp; msg = &quot;&quot;) {         if(msg.size() != 0) cout &lt;&lt; msg &lt;&lt; &quot;: &quot;;         cout &lt;&lt; &quot;objCount = &quot; &lt;&lt; objCount &lt;&lt; endl;     }         ~ObjectCount() { objCount--; } };  int ObjectCount::objCount = 0;  ObjectCount f(ObjectCount oc) {     return oc; }  int main(){     ObjectCount o1;     ObjectCount::print(&quot;after construction of o1&quot;);     ObjectCount o2 = f(o1);     ObjectCount::print(&quot;after call f()&quot;); } 区块链毕设学生528423821号
ObjectCount o2 = f(o1); 调用复制构造函数 函数结束调用析构函数 objCount–
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qklbishe.com区块链毕设代做网专注|以太坊fabric-计算机|java|毕业设计|代做平台 » Which is the correct output of the following program. #include <iostream> #include <string> using namespace std; class ObjectCount{ private: static int objCount; public: ObjectCount() { objCount++; } static void print(const string& msg = "") { if(msg.size() != 0) cout << msg << ": "; cout << "objCount = " << objCount << endl;   } ~ObjectCount() { objCount–; } }; int ObjectCount::objCount = 0; ObjectCount f(ObjectCount oc) { return oc; } int main(){ ObjectCount o1; ObjectCount::print("after construction of o1"); ObjectCount o2 = f(o1); ObjectCount::print("after call f()"); }-笔试面试资料

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