单项选择题X 纠错

A. Errors at lines 7 and 8 cause compilation to fail.
B. The program prints pairs of values for x and y that might not always be the same on the same line  (for example, “x=2, y=1”).
C. The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears twice (for example, “x=1, y=1” followed by  “x=1, y=1”).
D. The program prints pairs of values for x and y that are always the same on the same line (for example, “x=1, y=1”. In addition, each value appears only for once (for example, “x=1, y=1”  followed by “x=2, y=2”).

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单项选择题

A. The output is x = 6 y = 0
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单项选择题

A. Compilation succeeds and d takes the value 253.
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单项选择题

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