POJ C + + Programming Program # # #: Output specified result two

Programming Question # #: Output specified result two

Source: Peking University Online Program evaluation system POJ (Coursera statement: The exercises completed on POJ will not count to the final results of Coursera. )

Total time limit: 1000ms memory limit: 1024kB

Describe

Fill in the blanks to make the output of the program conform to the following requirements.

#include <iostream> #include <map>using namespace std;//here to supplement your code int a::count = 0;void func (b b) {}int main () {        A A1 (5), A2;        cout << a::count << Endl;        B B1 (4);        cout << a::count << Endl;        Func (B1);        cout << a::count << Endl;        A * pa = new B (4);        cout << a::count << Endl;        Delete pa;        cout << a::count << Endl;        return 0;}

Input

No input required.

Output

The result of the program output is:

2

3

B::d estructor

A::d estructor

3

4

B::d estructor

A::d estructor

3

B::d estructor

A::d estructor

A::d estructor

A::d estructor

Sample input

No input required.

Sample output

23B::d estructora::d estructor34b::d estructora::d estructor3b::d estructora::d estructora::d estructora::d estructor

Tips

int a::count = 0; This variable is used to record the total number of classes A and class A of the derived class object.

1#include <iostream>2#include <map>3 using namespacestd;4 //Add your code here5 classA {6  Public:7     Static intcount;8A () {count++;}9AintA) {count++;}Ten     Virtual~A () { Onecout<<"A::d estructor"<<Endl; A     } -     void operator Delete(void*a) { -count--; the     } - }; - classB: PublicA { -  Public: + B (): A () {} -Bintb): A () {} +B &operator= (B &b) { A         returnb; at     } -     Virtual~B () { -cout<<"B::d estructor"<<Endl; -     } - }; - intA::count =0; in voidfunc (b b) {} - intMain () to { +A A1 (5), A2; -cout << A::count <<Endl; theB B1 (4); *cout << A::count <<Endl; $ func (B1);Panax Notoginsengcout << A::count <<Endl; -A * PA =NewB4); thecout << A::count <<Endl; +     DeletePA; Acout << A::count <<Endl; the     return 0; +}

POJ C + + Programming Program # # #: Output specified result two