2023.5.5

//new在堆区开辟数据，手动开辟，手动释放
#include <iostream>
using namespace std;
//1.new的基本语法
int* func()
{
    //new返回的是指针
    int* p = new int(10);
    return p;
}
void test01()
{
    int* p = func();
    cout << *p << endl;
    delete p;
}
//2.在堆区创建整型数组 
void test02()
{
    //创建10个整型数据数组
    int *arr = new int[10];
    for (int i = 0; i < 10; i++)
    {
        arr[i] = i + 100;
    }
    for (int i = 0; i < 10; i++)
    {
        cout << arr[i]<< endl;
    }
    //delete数组
    delete[] arr;
}
int main()
{
    test01();
    test02();
    return 0;
}