Question

The following if-else statement will compile and run without any problems. However, it is not laid out in a way that is consistent with the other if-else statements we have used in our programs. Rewrite it so that the layout (indenting and line breaks) matches the style we used in this chapter. if \((x<\theta)\\{x=7 ; \text { cout }<<\text { "X is now positive." } ;\\}\) else \(\\{x=-7 ; \text { cout }<<\text { "x is now negative."; }\\}\)

Short answer

Question: Rewrite the given if-else statement with proper layout including indenting and line breaks: ```cpp if(x<\theta)x=7;cout<<"X is now positive.";else{x=-7;cout<<"x is now negative.";} ``` Answer: The properly formatted if-else statement can be written as: ```cpp if (x < theta) { x = 7; cout << "X is now positive."; } else { x = -7; cout << "x is now negative."; } ```

Step-by-step solution

Identify the if statement

First, we need to identify the if statement and the corresponding condition. In this case, we have the condition \((x<\theta)\). Also, make sure to put the condition inside a pair of parentheses when we rewrite it.

Rewrite the if statement

Now, let's rewrite the if statement using the proper layout including correct indenting and line breaks. Following the given condition, we will write the expression to be executed in a new line with proper indentation. ```cpp if (x < theta) { x = 7; cout << "X is now positive."; } ```

Identify the else statement

Next, we need to identify the else statement, which executes when the given condition is not met. We can see that it is paired with the if statement we just formatted.

Rewrite the else statement

Finally, let's rewrite the else statement using the proper layout including correct indenting and line breaks. Following the else keyword, we will write the expression to be executed in a new line with proper indentation. ```cpp else { x = -7; cout << "x is now negative."; } ```

Combine the restructured if-else statement

Now that both the if and else parts of the statement have been formatted properly, we can combine them into the complete and properly formatted if-else statement: ```cpp if (x < theta) { x = 7; cout << "X is now positive."; } else { x = -7; cout << "x is now negative."; } ```