Most C++ statements should end with ______.

Which of the following operators is used to access the address of a variable?

 Which data type is used to represent the absence of parameters?

What format specifier can be used to print a double value?

  Which concept allows you to reuse the written code? 

 If for an algorithm time complexity is given by O(n) then complexity of it is: 

In using namespace std; what is namespace ?

What is the output of the below program?

int main()

{

  const int a=10;

  a++;

  cout<<a;

return 0;

}

  How run-time polymorphisms are implemented in C++?

 What will be the output?

 double var = 8;
   int main()
    {
  int var = 5;
        printf("%d", var);
    }