Length of the segment#9963
Given the coordinates of the endpoints of a line segment, x_1, y_1, x_2, y_2, determine its length.
Four integers: x_1, y_1, x_2, y_2 (-1000 < x_1, y_1, x_2, y_2 < 1000).
A single real number representing the length of the segment, with precision to hundredths.
Example 1