Submission #25026

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Source Code Expand

#include <cstdio>
#include <vector>
#include <cmath>

using std::vector;

class Point2d {
public:
	Point2d(int x, int y) {
		m_x = x;
		m_y = y;
	};
	int getX() { return m_x; };
	int getY() { return m_y; };
	static double calcDistance(Point2d pt0, Point2d pt1) {
		double dx = (double)(pt0.getX() - pt1.getX());
		double dy = (double)(pt0.getY() - pt1.getY());
		return sqrt(dx*dx + dy*dy);
	}
private:
	int m_x;
	int m_y;
};


int main()
{
	int pointNum(0);
	scanf("%d", &pointNum);
	vector<Point2d> pointArray;
	for(int i=0; i<pointNum; i++) {
		int x, y;
		scanf("%d %d", &x, &y);
		Point2d pt(x,y);
		pointArray.push_back(pt);
	}
	double maxLength(0.0);
	for(int i=0; i<pointNum-1; i++) {
		for(int j=i+1; j<pointNum; j++) {
			double length = Point2d::calcDistance(pointArray[i], pointArray[j]);
			if(maxLength < length) {
				maxLength = length;
			}
		}
	}
	printf("%f\n", maxLength);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:29:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
./Main.cpp:33:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]

Judge Result