Question { Ness Technologies, 14063 }

What is R T T I ?

Answer

Run Time Type Information ( RTTI ) : Run-time type
information (RTTI) is a mechanism that allows the type of
an object to be determined during program execution.

There are three main C++ language elements to run-
time type information:
The dynamic_cast operator : Used for conversion of
polymorphic types.

The typeid operator : Used for identifying
the exact type of an object.
The type_info class : Used to hold the type information
returned by the typeid operator.

Question { Pfizer, 37239 }

What is the difference between pass by reference and pass by
value?

Answer

in Pass by value; if any change in variable in the sub-
function may not reflected to the main function. where as
in pass by reference the change in the variable may reflect
to the original value in the main funtion.

ex : // Pass by Reference

void Get( int &nIndex){
nIndex = 10;
}

void main()
{
int x = 100;
cout< }

o/p : 10;

ex : // Pass by Value

void Get( int nIndex){
nIndex = 10;
}

void main()
{
int x = 999;
cout< }

o/p : 999

Is This Answer Correct ?

29 Yes

17 No