A C++ program defines a test class with a constructor that increments a global counter when an object is created and a destructor that decrements the counter when an object is destroyed. The main function creates several test objects, some within blocks, and outputs messages tracking the counter to show when objects are created and destroyed.

1. 1 #include<iostream>
2 using namespace std;
3
4 int cc=0;
5 class test
6 {
7 public:
8 test() // constructor
9 {
10 cc++;
11 cout<<"nNo. of objects created: "<<cc;
12 }
13
14 ~test() // destructor
15 {
16 cout<<"nNo. of objects destroyed: "<<cc;
17 cc--;
18 }
19
20 };
21
22 int main()
23 {
24 cout<<"nEnter MAIN";
25 test t1, t2, t3, t4;
26
27 // block 1
28 {
29 cout<<"nnEnter Block 1: ";
30 test t5;
31 }
32
33 // block 2
34 {
35 cout<<"nnEnter Block 2: ";
36 test t7;
37 cout <<"nvariable t7===n";
38 }
39
40 cout<<"nnRE-Enter MAIN";
41
42 return 0;
43 }