若有以下程序：
include ＜iostream＞
using namespace std;
class sample
{
int x;
public:
sample(){}
void setx(int i)
{
x=i;
}
friend iht fun(sample B[],int n)
{
int m=0;
for{int i=0;i＜n;i++)
if(B[i].x＞m)
m=B[i].x;
return.m;
}
};
int main ( )
{
sample A[10];
int arr[]={90,87,42,78,97,84,60,55,78,65};
for(int i=O;i＜10;i++)
A．[i].setx(arr[i]);
cout＜＜fun(A, 10)＜＜end1;
return 0;
}
该程序运行后的输出结果是[ ]。
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