C++ Chapter 11-15 Quiz

     Which of the following header file defines the standard I/O predefined functions?

• ctype.h

• math.h      

• string.h

• stdio.h

Which function is used to check whether a character is alphanumeric or not?

• isalpha()    

• isdigit()

• isalnum()

• islower()

Which function begins the program execution?

• main()

• isdigit()

• isalpha()

• islower()

Which of the following function is with a return value and without any argument?

• x = display(int, int)

• x = display(float)

• y = display(float)

• y=display()

Which is the return data type of the function prototype of add(int, int);?

• int

• float

• char

• double

Which of the following is the scope operator?

• >    

• &   

• %    

• ::

Which of the following is the collection of variables of the same type that a referenced by a common name?

•  Int

• float

• Array

• class

Answer explanation

int age[] = {6,90,20,18,2}; How many elements are there in this array?

•    2

• 5

• 6   

• 4

cin>>n[3]; To which element does this statement accept the value?

• 2   

• 3

• 4

• 5

By default, a string ends with which character?

• \0

• \t

• \n  

• \b