【单选题】已定义类A: class A{ private int x = 1; protected int y = 2; public int z = 3; public int sumA(){return(x + y + z); } } 再通过继承与扩展定义子类B: class B extends A{ private int b = 4; public int sumB(){ int s = 0; s...
【简答题】有以下程序:#include int JiSuan(int x, int y, int z);main( ) { int a=1, b=2, c=3, s; s = JiSuan(a, b, c); printf("%d", s);}int JiSuan(int x, int y, int z){ return (x != y) + z / y;}程序的运行结果是( ...