题目内容

假设x=1,y=-1,z=1。以下语句的输出是_________?(请先正确缩进语句。) if (x > 0) if (y > 0) System.out.println("x > 0 and y > 0"); else if (z > 0) System.out.println("x < 0 and z > 0");

A. x > 0 and y > 0;
B. x < 0 and z > 0;
C. x < 0 and z < 0;
D. no output.

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