#include <iostream> #include <cmath> using namespace std; //在此处定义Particle类及其重载operator+()操作符函数 int main() { long double x, y, z, mass; cin >> x >> y >> z >> mass; Particle p1(x,y,z,mass); cin >> x >> y >> z >> mass; const Particle p2(x,y,z,mass); long double force = p1 - p2; printf("Gravity between two objects = %.1Lf N",force); return 0; } 输入样例： 0 0 0 5.965e15 0 0 38400000 7.342e14 输出样例： Gravity between two objects = 198101.7 N

下面是实现Particle类及其重载operator+()操作符函数的代码：

#include <iostream>
#include <cmath>

class Particle {
public:
    long double x, y, z, mass;

    Particle(long double x, long double y, long double z, long double mass)
        : x(x), y(y), z(z), mass(mass) {}

    long double operator-(const Particle& p) const {
        const long double G = 6.67430e-11;
        long double r = sqrt((x - p.x) * (x - p.x) + (y - p.y) * (y - p.y) + (z - p.z) * (z - p.z));
        return G * mass * p.mass / (r * r);
    }
};

int main() {
    long double x, y, z, mass;
    cin >> x >> y >> z >> mass;
    Particle p1(x, y, z, mass);
    cin >> x >> y >> z >> mass;
    const Particle p2(x, y, z, mass);

    long double force = p1 - p2;
    printf("Gravity between two objects = %.1Lf N", force);
    return 0;
}

该程序定义了一个名为Particle的类，它包含了物体的坐标和质量信息，并重载了`-`操作符，计算两个物体之间的万有引力大小。在主函数中，首先输入两个物体的信息，然后计算它们之间的引力并输出。