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#include <iostream>
using namespace std;
struct student {
char name[10];
float grade;
};
//更改student数据的grade成员，参数形式为引用
void change(student& x, float grade)
{
x.grade = grade;
}
//更改student数据的grade成员，参数形式为指针
void change1(student* p, float grade)
{
p->grade = grade;
}
//更改student类型的数据,普通参数形式
void change2(student x, float grade)
{
x.grade = grade;
}
void show(student& x)
{
cout << x.name << " " << x.grade << endl;
}
//在main()函数中，测试对结构的处理函数
void main()
{
student a = { "ZhangHua",351.5 };
//显示a的数据
show(a);
//用change修改分数，并显示
cout << "change(student &x,float grade):" << endl;
change(a, 360);
show(a);
//用change1修改分数，并显示
cout << "change(student *p,float grade:" << endl;
change1(&a, 375);
show(a);
//用change2修改分数,并显示
cout << "change2(student x,float grade):" << endl;
change2(a, 380.5);
show(a);
}
只有指针和引用才能修改结构体成员的值
