I.5: Can the last case of a switch statement skip including the break?
Answer:
Even though the last case of a switch statement does not require a break statement at the end, you should add break statements to all cases of the switch statement, including the last case. You should do so primarily because your program has a strong chance of being maintained by someone other than you who might add cases but neglect to notice that the last case has no break statement. This oversight would cause what would formerly be the last case statement to “fall through” to the new statements added to the bottom of the switch statement. Putting a break after each case statement would prevent this possible mishap and make your program more “bulletproof.” Besides, most of today’s optimizing compilers will optimize out the last break, so there will be no performance degradation if you add it.
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CONTENTS
- Can static variables be declared in a header file? (1)
- I.1: What is a local block? (1)
- I.10: Can an array be an lvalue? (1)
- I.11: What is an rvalue? (1)
- I.13: What is the difference between ++var and var++? (1)
- I.2: Should variables be stored in local blocks? (1)
- I.3: When is a switch statement better than multiple if statements? (1)
- I.4: Is a default case necessary in a switch statement? (1)
- I.5: Can the last case of a switch statement skip including the break? (1)
- I.6: Other than in a for statement (1)
- I.7: How can you tell whether a loop ended prematurely? (1)
- I.8: What is the difference between goto and longjmp() (1)
- I.9: What is an lvalue? (1)
- II.1: Where in memory are my variables stored? (1)
- II.10: How can you determine the maximum value that a numeric variable can hold? (1)
- II.11: Are there any problems with performing mathematical operations on different variable types? (1)
- II.12: What is operator promotion? (1)
- II.13: When should a type cast be used? (1)
- II.14: When should a type cast not be used? (1)
- II.15: Is it acceptable to declare/define a variable in a C header? (1)
- II.16: What is the difference between declaring a variable and (1)
- II.3: What is page thrashing? (1)
- II.4: What is a const pointer? (1)
- II.5: When should the register modifier be used? Does it (1)
- II.6: When should the volatile modifier be used? (1)
- II.7: Can a variable be both const and volatile? (1)
- II.8: When should the const modifier be used? (1)
- II.9: How reliable are floating-point comparisons? (1)
- What is the benefit of using const for declaring constants? (1)
- when is the comma (1)
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