php mcq questions with answers


                                


What will be the output of the following code snippet when it is executed?



    int x = 1; 
    float y = 1.1f;
    short z = 1;
    Console.WriteLine((float) x + y * z - (x += (short) y));




                                
A.0.1
B.1.0
C.1.1
D.11
                              
Click To Show Ans:A

                        
                                




Which of the following statements is correct about the C#.NET code snippet given below?


short s1 = 20;
short s2 = 400;
int a;
a = s1 * s2;




                                
A.A value 8000 will be assigned to a.
B.A negative value will be assigned to a.
C.During arithmetic if the result exceeds the high or low value of the range the value wraps around till the other side of the range.
D.An error is reported as widening conversion cannot takes place.
E.An overflow error will be reported since the result of the multiplication exceeds the range of a Short Integer.
                              
Click To Show Ans:A

                        
                                
Which of the following is the correct size of a Decimal datatype?
                                
A.8 Bytes
B.4 Bytes
C.10 Bytes
D.16 Bytes
E.None of the above.
                              
Click To Show Ans:D

                        
                                


Which of the following statements are correct?



    

  1. We can assign values of any type to variables of type object.

    2. 

  2. When a variable of a value type is converted to object, it is said to be unboxed.

    3. 

  3. When a variable of type object is converted to a value type, it is said to be boxed.

    4. 

  4. Boolean variable cannot have a value of null.

    5. 

  5. When a value type is boxed, an entirely new object must be allocated and constructed.

    6. 





                                
A.2, 5
B.1, 5
C.3, 4
D.2, 3
                              
Click To Show Ans:B