he Search

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:

Report Error

View Answer Report Error Discuss

Filed Under: C++

Q:

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;
        }

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

Answer & Explanation Answer: A) d99

Explanation:

In this program, we have declared the values as integer instead of character, So it is printing as d99 but it will not arise an error.

Report Error

View Answer Report Error Discuss

Filed Under: C++

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.

Report Error

View Answer Report Error Discuss

Filed Under: C++

Q:

What is the default return type of a function ?

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

Answer & Explanation Answer: B) void

Explanation:

Report Error

View Answer Report Error Discuss

Filed Under: C++

Q:

In which of the following we cannot overload the function?

A) return function	B) caller
C) called function	D) none of the mentioned

Answer & Explanation Answer: A) return function

Explanation:

While overloading the return function, it will rise a error, So we can’t overload the return function.

Report Error

View Answer Report Error Discuss

Filed Under: C++

Q:

What is the output of this program?

#include
        using namespace std;
        void fun(int x, int y)
        {
            x = 20;
            y = 10;
        }
        int main()
        {
            int x = 10;
            fun(x, x);
            cout << x;
            return 0;
        }

A) 10	B) 20
C) compile time error	D) none of these

Answer & Explanation Answer: A) 10

Explanation:

In this program, we called by value so the value will not be changed, So the output is 10

Report Error

View Answer Report Error Discuss

Filed Under: C++

Q:

Which is more effective while calling the functions?

A) call by value	B) call by reference
C) call by pointer	D) none

Answer & Explanation Answer: B) call by reference

Explanation:

In the call by reference, it will just copy the address of the variable to access it, so it will reduce the memory in accessing it.

Report Error

View Answer Report Error Discuss

Filed Under: C++

Q:

What is the output of this program?

#include
        using namespace std;
        struct sec {
            int a;
            char b;
        };
        int main()
        {
            struct sec s ={25,50};
            struct sec *ps =(struct sec *)&s;
            cout << ps->a << ps->b;
            return 0;
        }

A) 252	B) 253
C) 254	D) 262

Searching for "he"

Quick Links