C++ Exercises

1. Write a class called testing so that the following main function works

   int main()
   {
     // create some objects of type 'testing', setting a value member to the given value
     testing a(1),b(2);
   
     // print the number of objects of type 'testing' and their values
     testing::listing();
   }
   

2. Which line below causes the compiler to report an error? Why? If it's removed, and the resulting program run, what does it print out? Why?

   #include <iostream>
   using namespace std;
   int foo(int i) {
     cout << i << endl;
   };
   
   int main() {
    foo((1,2));
    foo(1,2);
   }