结构体作为函数参数(值传递,引用传递,指针传递)
一、值传递
#include <iostream>
#include <string>
using namespace std;struct Student
{
int id;
string name;
float score[2];
};
void OutCome(Student s)
{
cout<<s.id<<','<<s.name<<','<<s.score[0]<<','<<s.score[1]<<endl;
}
int main()
{
Student stu={2013666,"Tom",{88,99}};
OutCome(stu);
return 0;
}
二、引用传递
#include <iostream>
#include <string>
using namespace std;struct Student
{
int id;
string name;
float score[2];
};
//引用传递不会进行内存重新分配,因此和指针传参类似,效率很高
void OutCome(Student &s) //引用传参
{
cout<<s.id<<','<<s.name<<','<<s.score[0]<<','<<s.score[1]<<endl;
}int main()
{
Student stu={2013666,"Tom",{88,99}};
OutCome(stu);
return 0;
}
三、指针传递
把结构体的指针作为实参#include <iostream>
#include <string>
using namespace std;struct Student
{
int id;
string name;
float score[2];
};void OutCome(Student *s)
{
//注意指针访问结构体就不能用“.”啦,要用“->”
cout<<s->id<<','<<s->name<<','<<s->score[0]<<','<<s->score[1]<<endl;
}
int main()
{
Student stu={2013666,"Tom",{88,99}};
OutCome(&stu); //这种写法不是特别规范,但可以清晰表明传递的实际上是地址
//嘿嘿,下面这样写才清晰
//Student *p=&stu;
//OutCome(p)
return 0;
}
转载于:https://blog.csdn.net/shadowflow/article/details/75006450