Two-Point distance

Two-Point distance

Description

Enter two coordinates (x1, Y1), (X2, Y2) (0 <= x1, x2, Y1, Y2 <= 1000), and calculate and output the distance between two points.

Input

Enter an integer N (0 <n <= 1000) in the first row, indicating that there are N groups of test data. Then each group occupies one row and consists of four real numbers, representing X1, respectively, y1, X2, Y2, and data are separated by spaces.

Output

For each group of input data, a row is output, and the result is retained with two decimal places.

Sample Input

20 0 0 10 1 1 0

Sample output

1.001.41

 #include <stdio.h>#include <math.h>int main(){    int n;    double sum;scanf("%d",&n);double x1,x2,y1,y2;while(n--){    sum = 0;    scanf("%lf%lf%lf%lf",&x1,&y1,&x2,&y2);    sum = sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2));    printf("%.2f",sum);    printf("\n");}return 0;}        

 

Two-Point distance