ABSOLUTE C 5TH EDITION WALTER SAVITCH PDF

These test questions are true-false, fill in the blank, multiple choice, and free form questions that may require code. The multiple choice questions may have more than one correct answer. You are required to mark and comment on correct answers.. Mark all of the correct answers for full credit.

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These test questions are true-false, fill in the blank, multiple choice, and free form questions that may require code. The multiple choice questions may have more than one correct answer. You are required to mark and comment on correct answers.. Mark all of the correct answers for full credit.

The true false questions require an explanation in. Explanation: The operator uses short-circuit evaluation. The first member of this expression is true; the truth value of the complete expression can be determined from this; consequently, the second expression is not evaluated. There is no divide-by-zero error. Explanation: Unfortunately, the expression compiles without error and runs.

The left hand expression evaluates to true, which, if compared to a numeric type, converts to 1. When compared to 1, this is false. Explanation: The expression always evaluates to false. This cannot be what the programmer intended. Corrected code is! Code execution proceeds as follows: The operator!

It returns the opposite bool value. The value of time is converted to a bool. The value of time is certainly nonzero, hence! The value on the left false is converted to a 0 value of that type. The value of limit is unlikely to be a negative number and we are concerned about time running out, so it is unlikely that time is zero.

This is false. Explanation: The first expression evaluates to false, the value of the expression is determined by the second expression. The second expression is true so the expression evaluates to true. If true, the body executes, otherwise the loop terminates. Explanation: In addition to its use in loops, a break statement is used in the switch statement to transfer control to the next statement after the switch block.

Explanation: A break or continue terminates or restarts only the innermost loop containing the break or continue. Answer: This remark means that if you supply a program with bad data, you are guaranteed useless results from your program.

Explanation: The parentheses are present only for readability. There may be more than one correct answer. You must give all correct answers for full credit. An explanation is required. Answer: c This expression is always true. The value does not depend on x.

These bool values convert to int values 0 or 1 when compared to int value The expression evaluates to true for all values of x. Answer: a , b , c and d Explanation: c is correct too, though strange.

Here is one solution:. Explanation: d is wrong, the correct statement is: A comma expression has value equal to the value of the last expression in the list. Explanation: The else belongs to the second if, despite indentation suggesting otherwise.

Explanation: The other control constructs operate on a single statement, which may be, but is not required to be , a compound statement. Answer: a Not wrong, but the semicolon is probably an intent error.

Actually, there no way to guess what the programmer might mean here. There is a good chance the programmer is a refugee from Pascal, and then should be deleted. Explanation: There is also call-by-reference. Call-by-value makes a copy of the argument then uses that, hence does not make changes to the argument. Call-by-reference effectively passes the argument hence can make changes to the argument. It is placed between the type and the parameter to indicate a call-by-reference parameter.

Explanation: It makes no difference whether the ampersand appears next to the type or the variable. Answer: True. The value parameter is essentially a local variable initialized to the value of the argument at the time of a call. Answer: False. The mechanism is to pass the address of the argument which is used where the parameter occurs.

Explanation: Functions that call other functions can be tested independently of the called functions by writing stub functions. Stub functions are very simple functions that do nothing much more than sending just enough data to the caller to allow testing..

Functions that call other functions can be tested independently of the called functions by writing stub functions. Stub functions are substitute functions that are as simple as possible yet send data enough back to the caller to allow testing of the caller. Explanation: There is no connection between the return mechanism and the parameter passing mechanism.

Explanation: Technically true, nevertheless for the following reasons, names should be selected with care. I accept an answer of false from a student who provides a good explanation. Functions should be self-contained modules that are designed separately from the rest of the program.

On large projects, different programmers may be assigned to write of different functions. The programmer must choose meaningful names else the fellow programmers will have more difficulty than necessary in understanding the code.

That several functions may have the same parameter names is of no matter. This ignores the issue of coercion automatic type conversions. Explanation: Whether a given parameter is call-by-value or call-by-reference depends on whether there is an ampersand present. It is perfectly legitimate to mix call-by-value and call-by-reference parameters.

What does the parameter cause to be changed in the caller? Answer: A call-by-value parameter is a local variable initialized to the value of the argument, which is computed at the time of the call.

Explanation: With the parameters changed from reference to value, the function can do nothing. There is no effect external to this function. The only changes are made to local variables and value parameters. Stubs should be small enough that their correctness is assured. Stubs return enough information to let the main function compile and run, so that it can be tested.

Then test the main function. Having done this, each function in turn can be tested. An alternative is to test the functions with driver functions. Drivers are functions that call the function to be tested. Drivers, like stubs, should be simple enough that their correctness is assured. Then the function is called and tested. However, this procedure is better than writing a line program or worse a line program and then testing it.

Drivers are programs that call a function to be tested. Drivers should be simple enough that their correctness is assured. Answer: A stub is a small function that replaces another as yet untested function. The stub allows the caller to be tested without the added complexity of the untested function.

Suppose we are faced with the need for the unit price on a square pizza. This attempt involves having two overloaded unitPrice function versions both of which have argument lists with types int and double, which results in an ability. This tends to be error prone. We are faced with writing a function with a different name.

Of course, the easiest way to solve the problem of finding a unit price for a square pizza is to call the function for rectangular pizza, passing the edge size to the length and the width parameters, but that begs the question of this test question: how to overload in a natural way.

Explanation: The first parameter is called by value, so the parameter first is assigned 4 by the call. Explanation: The first argument is not changed by the function. The second argument is changed to 3. Explanation: The compiler tries to find an exact match, and there is none. Then the compiler tries to find a match using automatic type conversion.

Part c is excluded because use would result in two double to int conversions. The compiler says there is an ambiguity between a and b. If a default argument is provided for a parameter, all parameters to the right of this must be provided with default arguments.

Explanation: a is way too restrictive. Assertions are used like this: If you know that some of variables in your program should have a specific values, or these variable should make an expression take on a value you know, you can write this out as a Boolean expression as an assertion and test it.

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Absolute C++: International Edition, 5th Edition

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Absolute C++ (5th Edition) by Walter Savitch, Kenrick Mock

The cookie settings on this website are set to 'allow all cookies' to give you the very best experience. Please click Accept Cookies to continue to use the site. These test questions are fill in the blank, multiple choice, and true false. The multiple-choice questions may have more than one correct answer. There is one matching question. Explanation: The struct provides a mechanism to define a collection of values that may be of several different types. Explanation: A structure definition is a type that, like const definitions, we usually want to be available everywhere in a program that follows the structure definition.

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