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阅读下列程序 public class VariableUse{ public static void main(String[]args){ inta; if(a==8){ intb=9; System.out.println("a"="+a); System.out.println("b="+b); } System.out.println("a="+a); System.out.println("b="+b); } } 该程序在编译时的结果是( )。

A.变量a未赋值

B.第二个System.out.println("b="+b)语句中,变量b作用域有错

C.第二个System.out.println("a="+a)语句中,变量a作用域有错

D.第一个System.out.println("b="+b)语句中,变量b作用域有错


参考答案

更多 “ 阅读下列程序 public class VariableUse{ public static void main(String[]args){ inta; if(a==8){ intb=9; System.out.println("a"="+a); System.out.println("b="+b); } System.out.println("a="+a); System.out.println("b="+b); } } 该程序在编译时的结果是( )。A.变量a未赋值B.第二个System.out.println("b="+b)语句中,变量b作用域有错C.第二个System.out.println("a="+a)语句中,变量a作用域有错D.第一个System.out.println("b="+b)语句中,变量b作用域有错 ” 相关考题
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