CS 159 Exam 2
A reasonable effort should be made to convert most while loops into for loops
False
Declaration and definition of an array will include a default initialization of all elements
False
Each switch case label is the keyword case followed by a constant expression inside single quotes
False
If the number of values provided for initialization of an array is less than the size of the array then the remaining elements have no known value
False
In an event-controlled loop we know the number of times the action found inside the body of the loop will be executed
False
In order for two, or more, repetitive processes to be considered nested they must appear in the same user-defined function
False
In this course you will be expected to validate for the input of both the range of acceptable values and the correct data type
False
It is always a logical error to associate two switch case labels with a common set of actions
False
Iterative solutions are always better than recursive ones
False
The address operator is not necessary in a scanf to accept input for an individual array element when using the indexing technique
False
The following expression is used to generate a positive integer value in the range from x to y (inclusive), rand( ) % (y - x) + x
False
The gcc compiler as used on Vocareum this semester will permit a variable to be declared and initialized in the first expression of a for loop
False
The maximum number of actions that can be associated with a switch case label is one
False
The number of times the update action is executed is equal to the number of times the loop control expression is evaluated in a for loop
False
The only way to complement a NOT operator is with another NOT operator
False
The short-circuit method of evaluating logical expressions does not apply to loop control expressions
False
This for loop will iterate 6 times: for(i = 1; i <= 32; i * 2)
False
A counter-controlled loop may execute a constant number of iterations
True
A limited amount of control structures are permissible in the main function to ensure that it is the main function which makes most of the function calls for a program
True
A nested loop is a repetitive process contained inside of another repetitive process
True
According to the course standards a for loop should only be used with counter-controlled processes
True
According to the course standards if all three expressions are not needed in a for loop then you should instead make use of a while loop for your pretest looping needs
True
An iteration is one execution of all statements found inside the body of a loop
True
An iterative solution involved the use of a loop to solve a repetition problem
True
Array declarations will determine the type, name, and size of the array
True
Arrays must be declared and defined before they can be used
True
Associated with a case label is zero or more executable statements
True
Complementing a condition is one way to potentially remove negative logic from an expression
True
Control-forcing statements such as break, continue, exit, and the use of multiple return statements in a user-defined function are prohibited by course standards as mechanisms to terminate repetitive processes
True
For a value to be potentially used as an index it must be an integral value or an expression that evaluates to such
True
In a fixed-length array the size of the array is known when the program is written
True
In a post-test loop the minimum number of times that the statements found inside of the loop are executed is one
True
In a pretest loop the control expression is evaluated before each iteration, including the first iteration
True
In an else-if the if condition is evaluated first and additional else-if conditions are evaluated until a condition is found to be true
True
Input validation is an example of an event-controlled problem
True
It is expected for many cases that the code for the validation of input be found in the same function that contains the prompt for input and scanf statement
True
It is possible for the number of times a counter-controlled loop will iterate to depend on the value of a single variable or expression
True
It is possible to indicate on a structure chart when a user-defined is called from within a section construct
True
It is possible to update/change/alter the loop control variable of a for loop inside of its body
True
Negative logic refers to any expression that begins with a NOT operator or that contains multiple NOT operators within
True
No two switch case labels can represent the same constant expression value
True
One approach to potentially make solving problems that require nested loops easier is to separate each repetitive process into its own function
True
Only the statements associated with the first true condition are executed in a multiway else-if construct
True
Recursion is a repetitive process in which a function calls itself
True
Recursion should not be used with event-controlled processes as the result may be more function calls than the memory of the computer can accommodate
True
Selection by itself is insufficient for input validation because it provides only a finite number of opportunities for the user to input valid data
True
Similar to their required use in the if construct it is a course standard to always make use of { and } with all looping constructs
True
The action that is responsible for changing the result of the loop control from true to false is the loop update
True
The break statement results in the control of the program exiting the switch statement
True
The case label represents an integral type value that is a possible result of the control expression
True
The condition in a recursive function when the recursive function calls stop is known as the base case
True
The condition that determines whether the task to repeat is finished is known as the loop control expression
True
The contents of a loop have been identified to be repeated in a program
True
The control expression that follows the keyword switch may be a character expression
True
The course standards limit the use of the break statement to only switch statements
True
The do-while loop will terminate with a semicolon after its loop control expression
True
The else does not have a condition associated with it
True
The else is executed only when all previously evaluated conditions are false
True
The first random number generated is based on a seed, either the default provided by the system or one specified by the programmer
True
The index value represents an offset from the beginning of the array to the element being referenced
True
The initialization of the loop control variable must take place outside the body of a pretest loop
True
The loop control variable is commonly a part of the loop control expression and the recipient of the loop update action
True
The name of an array is a reference to the address of where it begins inside the memory of the computer
True
The number of times that the loop control expression is evaluated is one more than the number of iterations in pretest loop
True
The random number function returns an integer between 0 and RAND_MAX, which is defined in the stdlib.h library as the largest number that rand can generate
True
The srand function creates the starting seed for a number series based on the value it receives
True
The srand function must be called only once for each random number series
True
The switch construct can only be used when the selection condition reduces to an integral expression
True
The while loop requires the use of parentheses around the loop control expression
True
This for loop will iterate 10 times: for(i = 0; i < 10; i++)
True
This for loop will iterate 5 times: for(i = 12345; i != 0; i /= 10)
True
To generate a random integer in a range x to y, we must first scale the number and then, if x is greater than 0, shift the number within the range
True
When accessing an array element the C language does not check whether the index is within the boundary of an array
True
When the selection is based on a range of values, or the condition is not integral, we use the else-if for our multiway selection needs
True
When the statements associated with one case have been executed the program flow continues with the statements for the next case
True
When writing a selection construct the most probable conditions should come before those that occur less frequently
True
While each call to the rand function returns the next integer in the series, the srand function is a void function
True
You can make use of x++, ++x, x += 1, and x = x + 1 interchangeably as the update (third) expression of a for loop to increment the loop control variable
True
