题目内容

如果编写一个main()方法调用HelloAccp类的show()方法，其运行结果是（）。public class HelloAccp{int a=100,b=50;public void avg(){float c=(a+b)/2;}public void show(){System.out.println("平均值为：“ + c);}}

A. 存在错误，提示：无法解析c
B. 平均值为：75
C. 平均值为：75.0
D. 存在错误，提示：无法将数据类型int转换为float

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下列程序段的运行结果为______________。class Q1{public static void main（String args[ ]）{double d=10;Dec dec=new Dec( );dec.decrement(d);System.out.println(d);}}class Dec{public void decrement(double decMe){decMe = decMe - 5;}}

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