B - Calculation of distance between two points

B - Calculation of distance between two points

Two input coordinates (X1, Y1), (X2, Y2), and calculates the distance between the two outputs. 

Input

A plurality of input data sets, each representing a line of four real numbers, respectively, separated by a space between the x1, y1, x2, y2, data.

Output

For each case, an output line, the results of two decimals.

Sample Input

0 0 0 1
0 1 1 0

Sample Output

1.00
1.41

Code Example:

#include<stdio.h>
#include<math.h>

int main()
{
	float x1,y1,x2,y2; 
	while(scanf("%f %f %f %f",&x1,&y1,&x2,&y2)!=EOF){
	     printf("%.2f\n",sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)));
	}
 } 

Treatment on multiple sets of data may also be as follows:

#include<stdio.h>
#include<math.h>
int main()
{
	float x1,y1,x2,y2;
	while(~scanf("%f %f %f %f",&x1,&y1,&x2,&y2))
	{
	printf("%.2f\n",sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2)));
	}
 } 

NAND operation: ~
1 Take 0,0 take a
~ 1 = 0

 ~0 = 1