include

include

define PI 3.14159265

using namespace std;

struct Point3D{

double x;
double y;
double z;

};

Point3D convertToCartesian(double latitude, double longitude, double altitude){

Point3D point;
double radius = 6378137.0+altitude; // 地球半径+高度
longitude = longitude * PI / 180.0;
latitude = latitude * PI / 180.0;

point.x = radius * cos(latitude) * cos(longitude);
point.y = radius * cos(latitude) * sin(longitude);
point.z = radius * sin(latitude);

return point;

}

int main() {

double latitude, longitude, altitude;

cout << "输入经度：";
cin >> longitude;
cout << "输入纬度：";
cin >> latitude;
cout << "输入高度(m)：";
cin >> altitude;

Point3D point = convertToCartesian(latitude, longitude, altitude);

cout << "笛卡尔坐标系中的坐标为：" << endl;
cout << "X: " << point.x << endl;
cout << "Y: " << point.y << endl;
cout << "Z: " << point.z << endl;

return 0;

}