What is Method overloading?

Can we call a base class method without creating instance?

In which cases you use override and new base?

You have one base class virtual function how will call that function from derived class?

In which Scenario you will go for Interface or Abstract Class?

InfoAxon Technologies,

1. What does the following do: void afunction(int *x) { x=new int; *x=12; } int main() { int v=10; afunction(&v); cout<

Quark,

How long does this loop run: for(int x=0; x=3; x++) a) Never b) Three times c) Forever

Datavance, Quark, VEL, Wipro,

Which uses less memory? a) struct astruct { int x; float y; int v; }; b) union aunion { int x; float v; }; c) char array[10];

Quark,

Evaluate: int fn(int v) { if(v==1 || v==0) return 1; if(v%2==0) return fn(v/2)+2; else return fn(v-1)+3; } for fn(7); a) 10 b) 11 c) 1

Quark,

Which of the Standard C++ casts can be used to perform a ?safe? downcast: a) reinterpret_cast b) dynamic_cast c) static_cast d) const_cast

Quark,

class professor {}; class teacher : public virtual professor {}; class researcher : public virtual professor {}; class myprofessor : public teacher, public researcher {}; Referring to the sample code above, if an object of class "myprofessor" were created, how many instances of professor will it contain? a) 0 b) 1 c) 2 d) 3 e) 4

Quark,

string somestring ; Which of the following choices will convert a standard C++ string object "somestring" to a C string? a) Copy.somestring () ; b) somestring.c_str () c) &somestring [1] d) std::cstring (somestring) e) (char *) somestring

Quark,

class basex { int x; public: void setx(int y) {x=y;} }; class derived : basex {}; What is the access level for the member function "setx" in the class "derived" above? a) private b) local c) global d) public e) protected

Quark,

class Alpha { public: char data[10000]; Alpha(); ~Alpha(); }; class Beta { public: Beta() { n = 0; } void FillData(Alpha a); private: int n; }; How do you make the above sample code more efficient? a) If possible, make the constructor for Beta private to reduce the overhead of public constructors. b) Change the return type in FillData to int to negate the implicit return conversion from "int" to "void". c) Make the destructor for Alpha virtual. d) Make the constructor for Alpha virtual. e) Pass a const reference to Alpha in FillData

Quark,

class HasStatic { static int I; }; Referring to the sample code above, what is the appropriate method of defining the member variable "I", and assigning it the value 10, outside of the class declaration? a) HasStatic I = 10; b) int static I = 10; c) static I(10); d) static I = 10; e) int HasStatic::I = 10;

Quark,