Which one of the following statements is right?
A: If a local variable has static storage duration, its lifetime will be extended.
B: If a global variable has static storage duration, its scope will be expanded.
C: A variable will have an unpredictable value before initialization; no matter it has static storage duration or automatic storage duration.
D: The storage type descriptors which formal parameter can use are exactly the same as that used by the local variables.
A: If a local variable has static storage duration, its lifetime will be extended.
B: If a global variable has static storage duration, its scope will be expanded.
C: A variable will have an unpredictable value before initialization; no matter it has static storage duration or automatic storage duration.
D: The storage type descriptors which formal parameter can use are exactly the same as that used by the local variables.
举一反三
- Of which the initial value is unpredictable, if it is not initialized? A: static external variable B: local variable C: static local variable D: external variable
- If the storage type of a variable is , the compiler allocates memory only when the variable is referred?? register or static|extern or register|auto or register|auto or static
- The purpose of the ____ storage class is to extend the scope of a global variable declared in one source code file into another source code file. A: auto B: static C: extern D: register
- Which area has a large space for storage?
- Once a produce has been cooled to storage temperature ,its temperature muse be maintained in a refrigerated storage area. A: 正确 B: 错误