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Chapter 4: Problem 5

In an if/else statement, the if part executes its statement(s) if the expression is __________, and the else part executes its statement(s) if the expression is __________.

Short Answer

Expert verified
Answer: The two key terms that determine the execution of the if and else parts of an if/else statement are "true" for the if part, and "false" for the else part.

Step by step solution

01

Understanding the if/else statement

An if/else statement is a fundamental control structure used in programming to make decisions based on certain conditions. The structure includes an 'if' part and an optional 'else' part. The 'if' part executes a statement(s) when a specific condition is met (i.e., the expression is true). If the expression is not met (i.e., false), then the 'else' part will execute its statement(s).
02

Identify the key terms

The if part of an if/else statement executes its statement(s) if the expression is __true__, and the else part executes its statement(s) if the expression is __false__.

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Most popular questions from this chapter

Sometimes either a switch statement or an if/else if statement can be used to implement logic that requires branching to different blocks of program code. But the two are not interchangeable. A) Under what circumstances would an if/else if statement be a more appropriate choice than a switch statement? B) Under what circumstances would a switch statement be a more appropriate choice than an if/else if statement? C) Under what circumstances would a set of nested if / else statements be more appropriate than either of the other two structures? Try to come up with at least one example case for each of the three, where it is the best way to implement the desired branching logic.

Write one or more \(\mathrm{C}++\) statements that assign the correct value to discount, using the logic described here: Assign .20 to discount if dept equals 5 and price is \(\$ 100\) or more. Assign .15 to discount if dept is anything else and price is \(\$ 100\) or more. Assign .10 to discount if dept equals 5 and price is less than \(\$ 100\). Assign .05 to discount if dept is anything else and price is less than \(\$ 100\).

Write a C++ statement that prints the message "The number is not valid." if the variable hours is outside the range 0 through 80.

If the sub-expression on the left of the && logical operator is __________, the right sub-expression is not checked.

Assume the variables x = 5, y = 6, and z = 8. Indicate if each of the following conditions is true or false: A) (x == 5) || (y > 3) B) (7 <= x) && (z > 4) C) (2 != y) && (z != 4)
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