下列程序的输出结果是 class Father{ int m.n; Father(int a,int B) { m=a; n=b } void show ( ){ System.out.println('m and n:'+m+' '+n); } } class Son extends Father{ int p; Son (int a,int b,int C) { super(a,B) ; p=c; } void show(){supur.show( ); System.out.println('p:'+p); } } class Test { public static void main (String args[ ]) { Son s:new Son(6,7,8); s.show( ); } }