CS 150 Chapter 5 (final)

The statement in the body of a while loop acts as a decision maker.

The following while loop terminates when j > 20. j = 0; while (j < 20) j++;

The number of iterations of a counter-controlled loop is known in advance.

Assume all variables are properly declared. The output of the following C++ code is 2 3 4 5. n = 1; while (n < 5) { n++; cout << n << " "; }

In a counter-controlled while loop, the loop control variable must be initialized before the loop.

In the case of the sentinel-controlled while loop, the first item is read before the while loop is entered.

In a sentinel-controlled while loop, the body of the loop continues to execute until the EOF symbol is read.

The control variable in a flag-controlled while loop is a bool variable.

The control statements in the for loop include the initial statement, loop condition, and update statement.

Assume that all variables are properly declared. The following for loop executes 20 times.

To generate a random number, you can use the function rand of the header file ____________________.

The function srand takes as input a(n) ____________________ int, which acts as the seed for the algorithm.

The function eof is a member of the data type ____________________.

A for loop is typically called a counted or ____________________ for loop.

A semicolon at the end of the for statement (just before the body of the loop) is a(n) ____________________ error.

The for loop body executes indefinitely if the loop condition is always ____________________.

Putting one control structure statement inside another is called ____________________.

In a while and for loop, the loop condition is evaluated before executing the body of the loop. Therefore, while and for loops are called ____________________ loops.

A do...while loop is a(n) ____________________ loop, since the loop condition is evaluated after executing the body of the loop.

The ____________________ loop has an exit condition but no entry condition.

The ____________________ statement is typically used for two purposes:

If a(n) ____________________ statement is placed in a do...while structure, the loop-continue test is evaluated immediately after this statement.

A software ____________________ is a piece of code written on top of an existing piece of code intended to fix a bug in the original code.

A loop ____________________ is a set of statements that remains true each time the loop body is executed.

In a(n) "____________________" problem, either the loop executes one too many or one too few times.

In ____ structures, the computer repeats particular statements a certain number of times depending on some condition(s).

What is the output of the following C++ code? count = 1; num = 25; while (count < 25) { num = num - 1; count++; } cout << count << " " << num << endl;

What is the output of the following C++ code? num = 10; while (num > 10) num = num - 2; cout << num << endl;

What is the output of the following C++ code? num = 100; while (num <= 150) num = num + 5; cout << num << endl;

A loop that continues to execute endlessly is called a(n) ____ loop.

Consider the following code. int limit; int reps = 0; cin >> limit; while (reps < limit) { cin >> entry; triple = entry * 3; cout << triple; reps++; } cout << endl; This code is an example of a(n) ____ while loop.

Suppose sum and num are int variables, and the input is 18 25 61 6 -1. What is the output of the following code? sum = 0; cin >> num; while (num != -1) { sum = sum + num; cin >> num; } cout << sum << endl;

A(n) ____-controlled while loop uses a bool variable to control the loop.

Which of the following statements generates a random number between 0 and 50?

Consider the following code. (Assume that all variables are properly declared.) cin >> ch; while (cin) { cout << ch; cin >> ch; } This code is an example of a(n) ____ while loop.

What is the next Fibonacci number in the following sequence? 1, 1, 2, 3, 5, 8, 13, 21, ...

What is the initial statement in the following for loop? (Assume that all variables are properly declared.) int i; for (i = 1; i < 20; i++) cout << "Hello World"; cout << "!" << endl;

What is the output of the following C++ code? int j; for (j = 10; j <= 10; j++) cout << j << " "; cout << j << endl;

Suppose sum, num, and j are int variables, and the input is 4 7 12 9 -1. What is the output of the following code? cin >> sum; cin >> num; for (j = 1; j <= 3; j++) { cin >> num; sum = sum + num; } cout << sum << endl;

Suppose j, sum, and num are int variables, and the input is 26 34 61 4 -1. What is the output of the code? sum = 0; cin >> num; for (int j = 1; j <= 4; j++) { sum = sum + num; cin >> num; } cout << sum << endl;

Which of the following is a repetition structure in C++?

Which executes first in a do...while loop?

What is the value of x after the following statements execute? int x = 5; int y = 30; do x = x * 2; while (x < y);

What is the output of the following loop? count = 5; cout << 'St'; do { cout << 'o'; count--; } while (count <= 5);

____ loops are called posttest loops.

Which of the following loops is guaranteed to execute at least once?

Which of the following loops does not have an entry condition?

The ____ statement can be used to eliminate the use of certain (flag) variables.

What executes immediately after a continue statement in a while and do-while loop?

When a continue statement is executed in a ____, the update statement always executes.