C++ Programming Mock Test 1

1. Which of the following is C++ equivalent for scanf()?

2. The value 132.54 can be represented using which data type?

3. Which of three sizes of floating point types should be used when extended precision is required?

4. What is the correct syntax of declaring array of pointers of integers of size 10 in C++?

5. What will be the output of the following C++ code?

#include <iostream>
using namespace std;
class A
{
   private:
     int x;
   public:
     A(int _x)  {  x = _x; }
     int get()  { return x; }
};
class B
{
    static A a;
  public:
   static int get()
   {  return a.get(); }
}; 
int main(void)
{
    B b;
    cout << b.get();
    return 0;
}

6. What is the size of a character type in C and C++?

7. Which is correct with respect to the size of the data types?

8. Which of the following is correct about new and malloc?
i) new is an operator whereas malloc is a function
ii) new calls constructor malloc does not
iii) new returns required pointer whereas malloc returns void pointer and needs to be typecast

9. What will be the output of the following C++ code?

    #include <iostream>
    using namespace std;
    int main()
    {
        float i = 123.0f;
        cout << i << endl;
        return 0;
    } 

10. What is dynamic binding?