In C language

A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length. The position of each point in a plane is identified with an ordered pair of numbers, in the form (1,y), called the coordinates of the point. In geometry, a line segment is a part of a line that is bounded by two distinct end points, and contains every point on the line between its endpoints. Write a function with name length that takes as arguments the Cartesian coordinates of two points A(+1, y) and B(12, y2) and it returns the length of the line segment AB (Figure 1). The coordinates, which are given by the user, and the length must be real numbers. The calculation of the length must be performed by using the Pythagorean Theorem AK. ta Figure 1: Line segment AB with Cartesian coordinates Note: In order to calculate the length of the line segment, you will need to use the sqrt function that calculates the square root of a real number and which is declared in