第六节 练习5

#include<iostream>
#include<iomanip>
#include<cstdio>
#include<cmath>

using namespace std;

#define PI 3.14

int main()
{
   double x1,x2,y1,y2,s;
   cout << "输入："; 
   scanf("(%lf,%lf)(%lf,%lf)",&x1,&y1,&x2,&y2);  //利用scanf格式统一性
   //scnaf ①格式一致 ②遇空则止 => 格式化中不要有空格！！ 
   
   s = sqrt((x1-x2) * (x1-x2) + (y1-y2) * (y1-y2));
   cout << s;
   return 0; 
}

结果：