创建以变量m为个数的点云指针的c++代码

下面是一个示例代码，它创建了一个以变量m为个数的点云指针：

#include <iostream>

struct Point {
    float x;
    float y;
    float z;
};

int main() {
    int m;
    std::cout << "Enter the number of points: ";
    std::cin >> m;

    // 创建点云指针
    Point* pointCloud = new Point[m];

    // 输入点的坐标
    for (int i = 0; i < m; i++) {
        std::cout << "Enter the coordinates of point " << i+1 << ": ";
        std::cin >> pointCloud[i].x >> pointCloud[i].y >> pointCloud[i].z;
    }

    // 输出点的坐标
    std::cout << "Point cloud coordinates:\n";
    for (int i = 0; i < m; i++) {
        std::cout << "Point " << i+1 << ": ";
        std::cout << "(" << pointCloud[i].x << ", " << pointCloud[i].y << ", " << pointCloud[i].z << ")\n";
    }

    // 释放点云指针内存
    delete[] pointCloud;

    return 0;
}

这段代码首先会要求用户输入点的个数m，然后动态分配了一个大小为m的Point数组作为点云指针。接下来，它会要求用户依次输入每个点的坐标，并将其存储在对应的Point结构体中。最后，它会输出点云中每个点的坐标，并在程序结束前释放点云指针的内存