What is the output of this program ? | C++ Questions & Answers

Q:

What is the user-defined header file extension in c++?

A) cpp	B) h
C) hf	D) none of these

Answer & Explanation Answer: B) h

Explanation:

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Q:

What is the general syntax for accessing the namespace variable?

A) namespaceid::operator	B) namespace,operator
C) namespace#operator	D) none of the mentioned

Answer & Explanation Answer: A) namespaceid::operator

Explanation:

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Q:

What is the use of Namespace?

A) To encapsulate the data	B) To structure a program into logical units.
C) Both a and b	D) none of these

Answer & Explanation Answer: B) To structure a program into logical units.

Explanation:

The main aim of the namespace is to understand the logical units of the program and to make the program so robust.

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Q:

How many types of modularization are there in c++?

A) 4	B) 3
C) 1	D) none of these

Answer & Explanation Answer: D) none of these

Explanation:

There are two types of modular programming.They are interface and implementation.

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Q:

How many types of macros are there in c++?

A) 1	B) 2
C) 3	D) 4

Answer & Explanation Answer: B) 2

Explanation:

There are two types of macros. They are object-like and function-like.

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Q:

which keyword is used to define the macros in c++?

A) macro	B) define
C) #define	D) none of these

Answer & Explanation Answer: C) #define

Explanation:

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Q:

What are the mandatory part to present in function pointers?

A) &	B) retrun values
C) data types	D) none of these

Answer & Explanation Answer: C) data types

Explanation:

The data types are mandatory for declaring the variables in the function pointers.

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Q:

What is the default return type of a function ?

A) int	B) void
C) float	D) char

A) d99	B) d9d9
C) d9	D) compile time error

What is the output of this program ? #include using namespace std; int n(char, int); int (*p) (char, int) = n; int main() { (*p)('d', 9); p(10, 9); return 0; } int n(char c, int i) { cout << c << i; return 0; }

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What is the output of this program ?

#include
using namespace std;
int n(char, int);
int (p) (char, int) = n;
int main()
{
(p)('d', 9);
p(10, 9);
return 0;
}
int n(char c, int i)
{
cout << c << i;
return 0;
}