Answer Posted / astha biswas

there are some key-words like class , new etc which can be
used as identifiers in c. so if we save program in .c using,
new as an identifier, it will not show any error; but if we
save the same program in .cpp, it will show error as new is
an operator in c++.

EX:

#include<stdio.h>
#include<conio.h>
void main()
{
int new;
clrscr();
new=3;
printf("%d",new);
}

if we execute this program in .c, output will be 3.
but if we execute this program in .cpp; then it will show 2
errors.
1. declaration terminated incorrectly.
2. lvalue required.

What doescout<<(0==0) print out a) 0 b) 1 c) Compiler error: Lvalue required

764

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Write a function that swaps the values of two integers, using int* as the argument type?

770

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What are friend classes?

822

---

Define a pdb file.

817

---

What is pure virtual function? Or what is abstract class?

791

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List down the guideline that should be followed while using friend function.

809

---

What is std :: endl?

773

---

What is struct c++?

731

---

What are advantages of using friend classes?

811

---

Can a program run without main function?

859

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Assume studentNames and studentIDs are two parallel arrays of size N that hold student data. Write a pseudocode algorithm that sorts studentIDs array in ascending ID number order such that the two arrays remain parallel.

1943

---

What is a forward referencing and when should it be used?

813

---

what is COPY CONSTRUCTOR and what is it used for?

793

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What do you mean by function overriding & function overloading in c++?

786

---

Explain the use of vtable.

812

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