Ilp C++ Quiz Prelims 2

int main() {   int a[20]={1,2,3};   cout<<a++;   return 0;   }

• 2

• Address of a

• Compilation error

• Address of a+1

What is the output of the follwing code                 int a=5,*p=&a;                *p++;                  cout<<a<<"\t"<<*p<<endl;                 *++p;                  cout<<a<<"\t"<<*p<<endl;

• 5, 5, 6, 6

• 5, Garbage Value, 5, Garbage Value

• 5, 5, 5, Garbage value

• Garbage Value, 5, 6, Garbage Value

If you use same variable for two getline statements

• Both the inputs are stored in that variable

• The second input overwrites the first one

• The second input attempt fails since the variable already got its value

• You can not use same variable for two getline statements

Class ConstructTest         {                 public:                 ConstructTest()   {     cout<<"Constructor";     }                 ~ConstructTest()  {    cout<<"Destructor";       }    };         int main()      {                 ConstructTest c[2];                 return 0;         }

• ConstructorDestructorDestructor

• ConstructorConstructorDestructor

• ConstructorConstructorDestructorDestructor

• ConstructorDestructorConstructorDestructor

The base class of runtime_error is __________

• Runtime class

• Exception_handler class

• Exception class

• Virtual base class

What is the output of the following code snippet ? class VirtualClass         {                            int x,y;                 public:                 VirtualClass()   {                         x=1,y=2;           }                 virtual void operator<<(ostream&);       }; //end of class void VirtualClass::operator<<(ostream &os)        {                 os<<this->x<<"\t"<<this->y;         } int main()         {                 VirtualClass vcObj;                 vcObj<<cout;                 return 0;    }

• 2 1

• Error

• 1 2

• No output

    int main()     {       char s[]="welcome", *p=s;       cout<<p+p[1]-p[3];       return 0;      }

• Welcome

• Come

• Error

• Lcome

Int main() {   int n1=10,n2=2,k,*p1,*p2;   p1=&n1,p2=&n2;   k=*p1/*p2;   cout<<k;   return 0;  }

• 5

• Error

• Division cannot be done over pointers

• 10

Which function helps to extract the string "is left" from the string "23.5 is left"

• Atof()

• Strtod()

• Atod()

• None

class mybase{   }; class myclass : public mybase{ }; myclass m1; int main()   {   mybase *b1 = new myclass();   cout << "object m1 is of type " << typeid(b1).name(); }

• Object m1 is of type myclass

• Object m1 is of type mybase

• Object m1 is of type P6mybase

• Object m1 is of type P6myclass

What is the output of the following code snippet ?   class Test { public: Test(int x) { cout<<”Param Construcor”; }  }; //end of class int main() { Test t1=100; return 0;   }

• Compilation Error

• No Ouput

• Param Constructor

• None of the above

 What is the output of the below code ? class Alpha { public: Alpha(int a=10,int b) {cout<<a<<”\t”<<b;} }; int main() { Alpha x(10,20);}

• Error

• 10 20

• No output

• None of the above

The size of following variable is not 4 bytes in 32 bit systems

• Int

• Long int

• Short int

• Float

Which of the header file must be included to use stringstream?

Consider the below statement          char *word=”tcs”;          How do you get the address that is stored in the char* variable?

• &word

• Static_cast(word)

• *(&word)

• Static_cast(word)