rip test 3 ch 5 & 6
In a sentinel-controlled while loop, the body of the loop continues to execute until the EOF symbol is read.
false
In the for statement, if the loop condition is omitted, it is assumed to be false.
false
It is possible that the body of a while loop may not execute at all, but the body of a for loop executes at least once.
false
Loop control variables are automatically initialized in a loop.
false
The body of a do...while loop may not execute at all.
false
The execution of a return statement in a user-defined function terminates the program.
false
The following return statement returns the value 10. return 10, 16;
false
The following while loop terminates when j > 20. j = 0; while (j < 20)
false
The function heading int funcAlpha(float u, char v, int g) in a C++ program will cause a syntax error because the function return type is int and so the first parameter, u, must be of type int.
false
The function main is always compiled first, regardless of where in the program the function main is placed.
false
The output of the statement cout << toupper('8') << endl; is undefined since there is no upper case letter corresponding to '8'.
false
The return statement return x + 1; first returns the value of x and then increments the value of x
false
The statement in the body of a while loop acts as a decision maker.
false
To use a predefined value-returning function in a program, the programmer only needs to know the appropriate header file, the name of the function, and the type of the value returned by the function
false
To use the predefined function abs, the program must include the header file ctype
false
When writing a function prototype, you do not have to specify the data type of each parameter.
false
A(n) ____-controlled while loop uses a bool variable to control the loop.
flag
After a break statement executes, the program continues to execute with the first statement after the structure.
true
An infinite loop may execute indefinitely.
true
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 << " "; }
true
Assume that all variables are properly declared. The following statement in a value-returning function is legal. if (x % 2 == 0) return x; else return x + 1;
true
Both while and for loops are pre-test loops.
true
If a continue statement is placed in a do...while structure, the loop-continue test is evaluated immediately after the continue statement.
true
In C++, a function prototype is the function heading without the body of the function
true
In a counter-controlled while loop, the loop control variable must be initialized before the loop.
true
In the case of the sentinel-controlled while loop, the first item is read before the while loop is entered.
true
It is not necessary to specify the names of formal parameters in a function prototype.
true
Once you write and properly debug a function, you can use it in the program (or different programs) again and again without having to rewrite the same code repeatedly.
true
The control statements in the for loop include the initial statement, loop condition, and update statement.
true
The control variable in a flag-controlled while loop is a bool variable.
true
The do...while loop has an exit condition but no entry condition.
true
The execution of a C++ program always begins with the function main.
true
The execution of a break statement in a while loop terminates the loop.
true
The following function heading in a C++ program is valid: int funcExp(int u, char v, float g)
true
The fourth number in a Fibonacci sequence is found by taking the sum of the previous two numbers in the sequence.
true
The function eof returns true if the program has read past the end of the input file
true
The number of iterations of a counter-controlled loop is known in advance.
true
The statement return static_cast<char>(x + 5); where x is an int variable, returns a char value in a value-returning function.
true
To use a predefined function, the program must include the appropriate header file.
true
To use the predefined function exp, the program must include the header file cmath.
true
Using functions greatly enhances the program's readability because it reduces the complexity of the function main.
true
Functions that do not have a return type are called ____ functions.
void
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;
2.24 1.25
What is the output of the following C++ code? count = 1; num = 25; while (count < 25) { num = num - 1; count++; } cout << count << " " << num << endl;
251
What is the next Fibonacci number in the following sequence? 1, 1, 2, 3, 5, 8, 13, 21, ...
34
What is the value of x after the following statements execute? int x = 5; int y = 30; do x = x * 2; while (x < y);
40
The ____ statement can be used to eliminate the use of certain bool variables in a loop.
break
A sentinel-controlled while loop is an event-controlled while loop whose termination depends on a special value.
true
A function's formal parameter list cannot be empty.
false
A syntax error will result if the control statements of a for loop are omitted.
false
A value-returning function can return two values via the return statement.
false
A value-returning function returns only floating-point values
false
An EOF-controlled while loop is another name for a sentinel-controlled while loop.
false
Assume all variables are properly declared. The following for loop executes 20 times. for (i = 0; i <= 20; i++) cout << i;
false
If the formal parameter list of a function is empty, the parentheses after the function name are not needed.
false
Given the following function: int strange(int x, int y) { if (x > y) return x + y; else return x - y; } what is the output of the following statement? cout << strange(4, 5) << endl;
-1
The statement: return 8, 10; returns the value ____.
10
What is the output of the following C++ code? num = 10; while (num > 10) num = num - 2; cout << num << endl;
10
What is the output of the following C++ code? int j; for (j = 10; j <= 10; j++) cout << j << " "; cout << j << endl;
11 11
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;
110
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;
125
The output of the statement: cout << pow(3.0, 2.0) + 5 << endl; is ____.
14
Assume all variables are properly declared. What is the output of the following C++ code? num = 100; while (num <= 150) num = num + 5; cout << num << endl;
155
The statement: return 2 * 3 + 1, 1 + 5; returns the value ____.
6
The statement: return 37, y, 2 * 3; returns the value ____.
6
What value is returned by the following return statement? int x = 5; return x + 1;
6
Given the following function: int next(int x) { return (x + 1); } what is the output of the following statement? cout << next(next(5)) << endl;
7
The output of the statement: cout << pow(2.0, pow(3.0, 1.0)) << endl; is ____.
8.0
To use the predefined function tolower, the program must include the header file ____.
<cctype>
The standard header file for the abs(x)function is ____.
<cmath>
Which of the following loops does not have an entry condition?
A Do While Loop
A variable listed in a function call is known as a(n) ____ parameter. A variable list in a header is known as a(n) ____ parameter.
actual ; formal
A variable or expression listed in a call to a function is called the ____.
actual parameter
Consider the following code. int limit; int counter = 0; cin >> limit; while (counter < limit) { cin >> entry; triple = entry * 3; cout << triple; counter++; } cout << endl; This code is an example of a(n) ____ while loop.
counter controlled
Given the function prototype: float test(int, int, int); which of the following statements is legal?
cout << test(7,14,23);
Given the function prototype: double testAlpha(int u, char v, double t); which of the following statements is legal?
cout << testAlpha(5, 'A', 2)
Given the following function prototype: double tryMe(double, double);, which of the following statements is valid? Assume that all variables are properly declared.
cout << tryMe(2.0,3.00);
____ loops are called post-test loops.
do - while
Which of the following is a repetition structure in C++?
do while
Which of the following loops is guaranteed to execute at least once?
do while loop
A break statement is legal in a while loop, but not in a for loop.
false
When a continue statement is executed in a ____, the update statement always executes.
for loop
The heading of the function is also called the ____.
function header
A loop that continues to execute endlessly is called a(n) ____ loop.
infinite
Which of the following function prototypes is valid?
int funcExp(intx, floatv);
What executes immediately after a continue statement in a while and do-while loop?
loop continue test
In ____ structures, the computer repeats particular statements a certain number of times depending on some condition(s).
looping
A loop is a control structure that allows you to repeat a set of statements until certain conditions are met.
true
Which statement below about prototypes and headers is true?
prototypes end with a semicolon but headers do not
*Which executes first in a do...while loop?
the statement
What is the output of the following loop? count = 5; cout << 'St'; do { cout << 'o'; count--; } while (count <= 5);
this is an infinite loop
A do...while loop is a post-test loop.
true
A for loop is typically called an indexed for loop.
true
A function definition consists of the function heading and the body of the function
true
A function prototype ends with a semicolon.
true