QUIZ 26-30 ANSWERS

26.	_____ variables remain in memory until the program ends
	A. Area B. Global C. Local D. Reference E. Value Answer: Option B
27.	The outline or the definition of a function is called its
	A. beta test B. Forerunner C. Outline D. Prototype Answer: Option D
28.	Which of the following is false?
	A. Data stored in an array can be accessed faster than data stored in a disk file B. Data stored in an array needs to be entered only once, typically at the beginning of the program C. Arrays allow the programmer to store information in the computer's internal memory D. When using arrays, you will have fewer variable names to remember E. None of the preceding statements are false Answer: Option E

29.	A function typically contains
	A. the function header B. the function braces C. the return statement, if it's value- returning function D. a display message E. All of the above Answer: Option E

30.	A variable's _____ indicates which portions of the program can use the variable
	A. Area B. extent C. Lifetime D. reach E. scope Answer: Option E

QUIZ 21-25

21.	A group of related fields that contain all of the data about a specific person, place, or thing is called a
	A. data file B. field file C. program file D. Record Answer: Option D

22.	To send output to a file, you need to include the _____ header file in your program
	A. file.h B. fstream.h C. iomanip.h D. iostream.h E. of stream.h Answer: Option B

23.	A C++ _____ is a program that runs in a DOS window
	A. Algorithm B. cast application C. console application D. source application Answer: Option C

24.	A difference, between reference variables and pointers is that
	A. reference variables are easier to use B. pointers are easier to use C. reference variables are more flexible D. no difference exists between reference variables and pointers Answer: Option A

25.	A 'C function does not contain
	A. a function header B. argument declarations C. other 'C' functions D. function body E. None of the above Answer: Option C

Find output

#include <stdio.h>
int main()
{
int mar[5]={0,1,2,3,4};
int j,m,i;
i=++mar[0];
j=mar[1]++;
m=mar[i++];
printf("%d %d %d\n\n", i,j,m);
return 0;
}

Answer: i=2, because you increment it in m=mar[i++], j = 1, because the increment carried out after the assignment and m=2, because m=mar[2] => 2 1 2

QUIZ ANSWERS 16-20

QUIZ ANSWERS 16-20

16.	The generic type in a template function
	A. must be T B. can be T C. cannot be T for functions you create, but may be for C++'s built-in functions D. cannot be T Answer: Option B

17.	A function that is called automatically each time an object is destroyed is a
	A. Constructor B. destructor C. Destroyer D. terminator Answer: Option B

18.	A function can
	A. return a value B. perform a task C. change value of actual arguments in call by reference D. a, b, c above are all true E. None of the above Answer: Option D

19.	The statement float values[]={3.14, -7.86, 36.96, 4.87};
	A. assigns 36.96 to values[2] B. assigns -7.86 to values[2] C. gives an error message D. assign 14 to values[2] Answer: Option A

20.	When the compiler places a copy of a small function's statements directly into a program, the function is said to be _____
	A. Overloaded B. mangled C. inline D. redundant Answer: Option C

QUIZ ANSWERS 11-15

QUIZ ANSWERS 11-15

11.	A function that returns no values to the program that calls it is _____
	A. not allowed in C++ B. type void C. type empty D. type barren Answer: Option B

12.	The keyword used to define a structure is _____
	A. Stru B. stt C. Struct D. structure Answer: Option C

13.	Which of the following statements is false?
	A. A function is a block of code that performs a specific task B. Functions allow programmers to break large and complex problems into small and manageable tasks C. Functions allow programmers to use existing code to perform common tasks D. Functions can be called, or invoked, only once in a program E. Programmer-defined functions can be either value-returning or void Answer: Option D

14.	Header files often have the file extension _____
	A. .H B. .HE C. .HEA D. .HEAD Answer: Option A

15.

The #ifndef directive tests to see whether ________

A. a class has been defined B. a variable has been given a value C. a class has no variable definitions D. any objects of the class have been instantiated Answer: Option A #ifndef checks whether the given token has been #defined earlier in the file or in an included file; if not, it includes the code between it and the closing #else or, if no #else is present, #endif statement#ifndef is often used to make header files idempotent by defining a token once the file has been included and checking that the token was not set at the top of that file.