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C++ Point的比较函数实现

c++
小樊
92
2024-07-14 10:39:23
栏目: 编程语言

在C++中,可以通过重载运算符来实现Point对象的比较函数。以下是一个示例代码:

#include <iostream>

class Point {
public:
    int x, y;
    
    Point(int x, int y) : x(x), y(y) {}
    
    bool operator==(const Point& other) const {
        return x == other.x && y == other.y;
    }
    
    bool operator!=(const Point& other) const {
        return !(*this == other);
    }
    
    bool operator<(const Point& other) const {
        if (x == other.x) {
            return y < other.y;
        }
        return x < other.x;
    }
};

int main() {
    Point p1(2, 3);
    Point p2(2, 4);
    
    if (p1 == p2) {
        std::cout << "p1 is equal to p2\n";
    } else {
        std::cout << "p1 is not equal to p2\n";
    }
    
    if (p1 < p2) {
        std::cout << "p1 is less than p2\n";
    } else {
        std::cout << "p1 is not less than p2\n";
    }
    
    return 0;
}

在上面的代码中,我们定义了一个Point类,并重载了相等运算符==、不相等运算符!=和小于运算符<。通过重载这些运算符,我们可以对Point对象进行比较操作。在主函数中,我们创建了两个Point对象p1和p2,并使用重载的运算符来比较它们的大小。

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