Uri problem 1015 solve

Problem :

Distance Between Two Points

Adapted by Neilor Tonin, URI  Brazil

Timelimit: 1

Read the four values corresponding to the x and y axes of two points in the plane, p1 (x1, y1) and p2 (x2, y2) and calculate the distance between them, rounded to four decimal places, according to the formula:

Distance = 

Input

The input file contains two lines with data. The first one contains two double numbers with one digit after the decimal point, respectly: x1 y1 and the second one also contains two double numbers with one digit after the decimal point: x2 y2.

Output

Calculate and print the distance, using the above phormula, with 4 digits after the decimal point.

Sample Input	Sample Output
1.0 7.0 5.0 9.0	4.4721

-2.5 0.4 12.1 7.3

16.1484

2.5 -0.4 -12.2 7.0

16.4575

Solution:

#include <stdio.h>

  

int main() {

  

    float x1,y1,x2,y2,first,sec,sum;

 

    scanf("%f %f %f %f", &x1, &y1, &x2, &y2);

 

    first=x2-x1;

 

    sec=y2-y1;

 

    sum=sqrt((first*first)+(sec*sec));

 

    printf("%.4f\n",sum);

 

 

  

    return 0;

}