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Q:

Which of the following are capabilities of functions in JavaScript?

A) Accept parameters B) Return a value
C) Accept parameters and Return a value D) None of the above
 
Answer & Explanation Answer: A) Accept parameters

Explanation:

Accept parameters are capabilities of functions in JavaScript.

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Filed Under: Java
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Q:

What is function prototyping? What are its advantages?

Answer

Function prototyping is a function declaration statement that tells the compiler about the return type of the function and the number as well as type of arguments required by the function at the time of calling it.


Syntax:


return_type function_name( type1 arg1, type 2 arg2, ... );


 


Advantages of function prototype :


- It helps the compiler in determining whether a function is called correctly or not. Each time when a function is called, its calling statement is compared with its prototype. In case of any mismatch, compiler reports an error.


- A function must be defined before calling it. But prototyping allows a function to be called before defining it.

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Subject: C++

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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++

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Q:

Which of the following is not a keyword?

A) assert B) pass
C) eval D) nonlocal
 
Answer & Explanation Answer: C) eval

Explanation:

"eval" is not a keyword and is can be used as variable.

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Filed Under: Java

28 22814
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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Filed Under: C++

0 21939
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

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Filed Under: C++

2 20672
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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Filed Under: C++

1 20021
Q:

PHP allows you to send emails directly from a script.

php allows you to send emails directly from a script

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The mail() function allows you to send emails directly from a script.


 

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Subject: PHP
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