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Chapter 4: Problem 28

The expression following a case statement must be a(n) ______ ______.

Short Answer

Expert verified
Answer: The expression following a case statement must be a constant integer or enumeration constant.

Step by step solution

01

Understanding Case Statements

In programming languages like C, C++, and Java, a case statement is used within a switch statement as a method of handling multiple conditions. It allows for more efficient execution of code compared to using a series of if-else statements. In a switch statement, an expression (typically a variable) is evaluated, and the execution jumps to the case label which matches the value of the evaluated expression. Here is an example of a switch statement: ```c int dayOfWeek = 3; switch (dayOfWeek) { case 1: printf("Monday"); break; case 2: printf("Tuesday"); break; case 3: printf("Wednesday"); break; } ```
02

Expression Following a Case Statement

The expression following a case statement must be a constant integer or an enumeration constant, since case labels cannot be dynamic values. The key point here is that case labels need to be constants, not variables or changing values.
03

Fill in the Blank

Based on the above explanation, the blank spaces in the given exercise should be filled with "constant integer" or "enumeration constant". So, the final statement should be: The expression following a case statement must be a(n) constant integer or enumeration constant.

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Most popular questions from this chapter

Write an if 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 true, the right sub-expression is not checked.

True or False A conditionally executed statement should be indented one level from the if statement.

Write nested if statements that perform the following tests: If amount1 is greater than 10 and amount 2 is less than \(100,\) display the greater of the two.

Each of the following programs has errors. Find as many as you can. // This program uses a switch-case statement to assign a // letter grade (A, B, C, D, or F) to a numeric test score. #include using namespace std;
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