#include<iostream>
using namespace std;
struct student
{
	string name;
	int num;
	int sex;
};
int main() {
	student* p,*q,stu;
	p = new student{ "dema",104323,1 };//用new新开辟了一个存放student型数据的空间，把地址给了p；
	/*p->name = "dema";
	p->num = 1043320140;
	p->sex = 1;*/
	cout << p->name << p->num << p->sex << endl;
	delete p;                     
	stu.name = "demaxiya";
	stu.num = 45455;
	stu.sex = 1;
	cout << stu.name << stu.num << stu.sex << endl;
	q = &stu;
	cout << q->name << q->num << q->sex << endl;
	cout << ( * q).name << (*q).num << (*q) .sex << endl;
	//指向stu的指针q 的几种输出方式;
	return 0;

}

结果：

dema1043231
demaxiya454551
demaxiya454551
demaxiya454551

补充：new delete是运算符 不是函数；与c语言的malloc和free 相似但比其效率更高；