思科2020校园招聘笔试（软件类）

#include <iostream>
using namespace std

class Object{
    void* data
    const int size
    const char id
public:
    Object(int sz, char c) : size(sz), id(c){
         data = new char[size]
         cout << "Constructor called for object " << id << ", size = " << size << endl
    }
    ~Object(){
        cout << "Destructor called for object " << id << endl
        delete []data
    }
}

int main() {
    Object* a = new Object(20, 'a')
    delete a
    void* b = new Object(20, 'b')
    delete b
}

#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()")
}

import java.util.HashMap
import java.util.Map

public class Foo {  public static void main(String[] args) {  Map<String, Integer> map = new HashMap<String, Integer>() // 1  map.put("a", 127) // 2  map.put("b", new Integer(127)) // 3  map.put(null, null) // 4  System.out.println(map.get("a") == (map.get("b"))) // 5  }
}