C language integer constant has only one decimal representation.
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A character constant is a character enclosed in double quotation marks.
If there is a definition statement in the function: int k; ( )
A. The system will automatically assign an initial value of 0 to k
B. At this time, the value of k is uncertain
C. The system will automatically assign an initial value of -1 to k
D. There is no value in k
switch statement is a multi branch selection statement.
All three expressions in a for loop statement may be omitted.
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