南阳101 

 1 #include<stdio.h>
 2 #include<math.h>
 3 int main()
 4 {
 5     int n;
 6     double x1,x2,y1,y2;
 7     scanf("%d",&n);
 8     while(n--)
 9     {
10         scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);
11         printf("%.2lf\n",sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)));
12     }
13 }

 

posted @ 2016-12-30 12:20  Posase  阅读(244)  评论(0)    收藏  举报