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Chapter 4: Problem 4

For an if statement to conditionally execute a group of statements, the statements must be enclosed in a set of __________.

Short Answer

Expert verified
#tag_title# Using brackets in if statements #tag_content# In programming, brackets (also known as braces or curly braces) are used to enclose a group of statements for if statements. They indicate the block of code that will be executed if the condition specified within the parentheses of the if statement is true. This allows for better organization and readability of code. The use of brackets in if statements helps maintain proper code structure and ensures that all the statements in the block execute together when the condition is met.

Step by step solution

01

Introduction to if statement

An if statement is a programming construct that allows you to selectively execute a group of statements based on a specific condition. The condition can be anything that evaluates to either true or false, and the group of statements will execute only if the condition is true.
02

Syntax of if statement

The syntax for an if statement varies slightly depending on the programming language. Generally, the structure looks like this: if (condition) { // Group of statements } The condition is enclosed in parentheses, and the group of statements is enclosed in a pair of brackets, also known as braces or curly braces ({}). These brackets are the answer to the exercise question.
03

Example

Here is an example of an if statement in action: if (x > y) { // Statement 1 // Statement 2 // ... } In this example, if the variable 'x' is greater than the variable 'y', then the group of statements enclosed in the curly braces ({}) will execute.

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Most popular questions from this chapter

Write an if/else statement that assigns 0 to x when y is equal to 10. Otherwise it should assign 1 to x.

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 \(\$ 100\).

Logical operators have __________ precedence than relational operators.

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