CSCI study Guide Test 2

A control structure aleters the normal sequential flow of execution in a program

Conditional statements help incorporate decision making into programs

In C++, both ! and != are relational operators.

In C++, both "!", "&&" and "||" are relational operators.

The value of the expression 'a' < 'A' is true.

In C++, all relational operators are evaluated before logical operators.

. If a semicolon is placed after the expression in an if...else statement, the else statement is always executed.

The expression in the following if statement evaluates to true only if the value of score is 50. if (score = 50) grade = 'Z';

In a switch statement, every case must have a break.

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.

A sentinel-controlled while loop is an event-controlled while loop whose termination depends on a special value.

An EOF-controlled while loop is another name for a sentinel-controlled while loop.

Loop control variables are automatically initialized in a loop.

In an EOF-controlled loop if the program reads any faulty data (such as a char value into an int variable), the input stream variable returns the value false.

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

A do...while loop is a post-test loop

The body of a do...while loop may not execute at all

Both while and for loops are pretest loops

Using functions greatly enhances the program’s readability because it reduces the complexity of the function main

To use a predefined function, the program must include the appropriate header file.

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.

A value-returning function return only floating point values

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.

When writing a function prototype, you do not have to specify the data type of each parameter.

The following return statement returns the value 10. return 10, 16

The function main is always compiled first, regardless of where in the program the function main is placed.

In a ____ control structure, the computer executes particular statements depending on some condition(s).

Which of the following is a relational operator?

Suppose that “x” is an int variable. Which of the following expressions always evaluates to true?

Which of the following operators has the highest precedence

Which of the following expressions correctly determines that “x” is greater than 10 and less than 20

What is the output of the following C++ code? int x = 35; int y = 45; int z; if (x > y) z = x + y; else z = y – x; cout << x << " " << y << " " << z << endl;

When one control statement is located within another, it is said to be ____.

Which of the following will cause a logical error if you are attempting to compare “x” to 5

What is the output of the following code? char lastInitial = 'S'; switch (lastInitial) { case 'A': cout << "section 1" <<endl; break; case 'B': cout << "section 2" <<endl; break; case 'C': cout << "section 3" <<endl; break; case 'D': cout << "section 4" <<endl; break; default: cout << "section 5" <<endl;

What is the output of the following C++ code? int x = 55; int y = 5; switch (x % 7) { case 0: case 1: y++; case 2: case 3: y = y + 2; case 4: break; case 5: case 6: y = y – 3; } cout << y << endl;

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

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;

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

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

Which of the following 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

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

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);

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

To use the predefined function “tolower”, the program must include the header file

The output of the statement: cout << pow(2.0, pow(3.0, 1.0)) << endl;

Given the following function prototype: int test(float, char); which of the following statements is valid

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.

Given the following function: int next(int x) { return (x + 1); } what is the output of the following statement? cout << next(next(5)) << endl;

Given the following function prototype: double tryMe(double, double);, which of the following statements is valid? Assume that all variables are properly declared.

Given the function prototype: float test(int, int, int); which of the following statements is legal

Which of the following function prototypes is valid

Given the following function prototype: int myFunc(int, int); which of the following statements is valid? Assume that all variables are properly declared.

The statement: return 8, 10; returns the value