实在是不知道错哪了，自己验证数据没有问题但是一直五个WA

#include<iostream>
#include<math.h>
#include<iomanip>

using namespace std;

//求A边长
double distanceA(double x1, double y1, double x2, double y2)
{
	double A = sqrt((x2 - x1)*(x2 - x1) + (y2 - y1)*(y2 - y1));
	return A;
}

//求B边长
double distanceB(double x1, double y1, double x3, double y3)
{
	double B = sqrt((x3 - x1)*(x3 - x1) + (y3 - y1)*(y3 - y1));
	return B;
}

//求C边长
double distanceC(double x2, double y2, double x3, double y3)
{
	double C = sqrt((x3 - x2)*(x3 - x2) + (y3 - y2)*(y3 - y2));
	return C;
}
//主调函数，存储所有数据
int main()
{
	double x1, y1, x2, y2, x3, y3;
	cout << "请输入A点坐标（x1,y1）" << endl;
	cin >> x1 >> y1;
	cout << "请输入B点坐标（x2,y2）" << endl;
	cin >> x2 >> y2;
	cout << "请输入X点坐标（x3,y3）" << endl;
	cin >> x3 >> y3;

   //求周长(用绝对值控制每个值)
	cout << "三边长和为： " << setiosflags(ios::fixed)<<setprecision(2)<<distanceA(abs(x1), abs(y1), abs(x2), abs(y2))+ distanceB(abs(x1), abs(y1), abs(x3), abs(y3))+ distanceC(abs(x2), abs(y2), abs(x3), abs(y3)) << endl;

		system("pause");
		return 0;
}