C++冒泡排序的值传递地址传递问题

为什么我这用的值传递，实参却改了


#include
#include<string>
using namespace std;
struct hero
{
    string name;
    int age;
    string sex;
};
void bubbleSort(hero h[], int len)
{
    hero temp = h[0];
    for (int i = 0; i < len-1; i++)
    {
        for (int j = 0; j < len - i - 1; j++)
        {
            if (h[j].age > h[j + 1].age)
            {
                temp = h[j];
                h[j] = h[j + 1];
                h[j + 1] = temp;
            }
        }
    }
}
int main() 
{
    hero h[5] =
    {
        {"刘备",23,"男"},
        {"关羽",22,"男"},
        {"张飞",20,"男"},
        {"赵云",21,"男"},
        {"貂蝉",19,"女"},
    };
    int len = sizeof(h) / sizeof(h[0]);
    for (int i = 0; i < len; i++)
    {
        cout << h[i].name << h[i].age << h[i].sex << endl;
    }
    bubbleSort(h, len);
    for (int i = 0; i < len; i++)
    {
        cout << h[i].name << h[i].age << h[i].sex << endl;
    }
    system("pause");
}

img

数组作为参数，实际传递的是数组的首地址，相当于指针，所以函数内是可以修改数组元素值的