有以下程序: include class A { intx; public: A(int a) { x=a;} friend class B; 有以下程序：include＜iostream.h＞class A{int x;public:A(int a){x=a;}friend class B;}class B{public:void print(A a){a. x--;cout＜＜a.x＜＜end1;}};void main(){A a(10);B b;b.print(a) ;}程序执行后的输出结果是【 】。
有以下程序: include class A { intx; public: A(int a) { x=a;} friend class B;
有以下程序：
include＜iostream.h＞
class A
{
int x;
public:
A(int a)
{
x=a;
}
friend class B;
}
class B{
public:
void print(A a){
a. x--;
cout＜＜a.x＜＜end1;
}
};
void main()
{
A a(10);
B b;
b.print(a) ;
}
程序执行后的输出结果是【 】。
相关考题：
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