Exam 4: Making Decisions

What is the output of the following code segment if the user enters 90 for the score? Cout << "Enter your test score: "; Cin >> test_score; If (test_score < 60) Cout << "You failed the test." << endl; If (test_score > 60) Cout << "You passed the test." Else Cout << "You need to study harder next time." << endl;

This operator takes an operand and reverses its truth or Falsehood:

Input values should always be checked for

Which line in the following program will cause a compiler error? 1 #include <iostream> 2 using namespace std; 3 int main() 4 { 5 $\quad$ int number = 5; 6 $\quad$ if (number >= 0 && <= 100) 7 $\quad$$\quad$ cout << "passed.\n"; 8 $\quad$ else 9 $\quad$$\quad$ cout << "failed.\n"; 10 $\quad$ return 0; 11 }

What is the value of the following expression? True && !False

You should be careful when using the equality operator to compare floating point values because of potential round-off errors.

The value of result in the following expression will be 0 if x has the value of 12. result = x > 100 ? 0 : 1;

Which statement allows you to properly check the char variable code to determine whether it is equal to a C and then output This is a check?

The default section is required in a switch statement.

If the expression on the left side of the following is true, the expression on the right side will not be checked. (a > = b) || (c == d)

As a rule of style, when writing an if statement you should indent the conditionally-executed statements.

Without this statement appearing in a switch construct, the program "falls through" all of the statements below the one with the matching case expression.

What is the value of result after the following code executes? int a = 60; int b = 15; int result = 10; if (a = b) $\quad$ result *= 2;

A variable, usually a bool or an int, that signals when a condition exists is known as a(n)

Which of the following expressions will determine whether x is less than or equal to y?

Which of the following is evaluated first, given the expression: A && B || C && !D

After the following code executes, what is the value of my_value if the user enters 0? Cin >> my_value; If (my_value > 5) My_value = my_value + 5; Else if (my_value > 2) My_value = my_value + 10; Else My_value = my_value + 15;

What is the output of the following code? int w = 98; int x = 99; int y = 0; int z = 1; if (x >= 99) { $\quad$ if (x < 99) $\quad$$\quad$ cout << y << endl; $\quad$ else $\quad$$\quad$ cout << z << endl; } else { $\quad$ if (x == 99) $\quad$$\quad$ cout << x << endl; $\quad$ else $\quad$$\quad$ cout << w << endl; }

Relational operators allow you to __________ numbers.

This operator represents the logical AND: