Wuhan University of Science and Technology acm:1006:0 starting point algorithm 25--to find the distance between two points

Problem Description

Enter the coordinates of 2 points in the plane coordinate system to output the distance between them

Input

Enter 4 floating-point numbers x1 y1 x2 y2, respectively (x1,y1) (x2,y2) coordinates (multiple sets of data)

Output

Outputs the distance between them, preserving 2 decimal places (one row per group of data)

Sample Input

1 0 2 0

Sample Output

1.00

1#include <stdio.h>2 3#include <math.h>4 5  6 7 intMain ()8 9 {Ten  One          floatX1,y1,x2,y2; A  -          DoubleLen; -  the           while(SCANF ("%f%f%f%f", &x1,&y1,&x2,&y2)! =EOF) -  -          { -  +Len=sqrt ((x2-x1) * (x2-x1) + (y2-y1) * (y2-y1)); -  +printf"%.2lf\n", Len); A  at          } -  -                    return 0; -  -}

Other code:

1#include <stdio.h>2#include <math.h>3 intMain ()4 {5     DoubleX1,x2,y1,y2;6     Doubledistance;7      while(SCANF ("%LF%LF%LF%LF", &x1,&y1,&x2,&y2)! =EOF)8     {9Distance=sqrt (Fabs (x1-x2) *fabs (x1-x2) +fabs (y1-y2) *fabs (y1-y2));Tenprintf"%.2lf\n", distance); One     } A     return 0; -}

Wuhan University of Science and Technology acm:1006:0 starting point algorithm 25--to find the distance between two points