The inner or dot product of the two vectors u = (ux, uy) and v = (vx, vy) is defined as:

u*v = (ux, uy) * (vx, vy) = ux * vx + uy * vy

Write a C program to compute the inner product of two vectors using the definition. The function should take as arguments the four vector components and return their inner product. The function prototype should be:

double inner_product (double ux, double uy, double vx, double vy);