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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.

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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
 
Answer & Explanation Answer: A) 252

Explanation:

In this program, We are dividing the values of a and b, printing it.

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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
 
Answer & Explanation Answer: A) 252

Explanation:

In this program, We are dividing the values of a and b, printing it.

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Q:

Which of the following is a properly defined structure?

A) struct {int a;} B) struct a_struct {int a;}
C) struct a_struct int a; D) struct a_struct {int a;};
 
Answer & Explanation Answer: D) struct a_struct {int a;};

Explanation:

The a_struct is declared as structure name and its data element is a.

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Q:

What is the output of this program?

 #include
       using namespace std;
       int main()
       {
           int arr[] = {4, 5, 6, 7};
           int *p = (arr + 1);
           cout << arr;
           return 0;
       }

A) 4 B) 5
C) address of arr D) 7
 
Answer & Explanation Answer: C) address of arr

Explanation:

As we couted to print only arr, it will print the address of the array.

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Q:

LONGEST RIVER IN ODISHA

Answer

Mahanadi

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Subject: Indian Geography

Q:

What is meaning of following declaration?
int(*p[5])();

A) p is pointer to function. B) p is array of pointer to function.
C) p is pointer to such function which return type is array. D) p is pointer to array of function.
 
Answer & Explanation Answer: B) p is array of pointer to function.

Explanation:
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Q:

Which of the following gives the memory address of the first element in array?

A) array[0]; B) array[1];
C) array(2); D) array;
 
Answer & Explanation Answer: D) array;

Explanation:
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Filed Under: C++