Using functions, write a C++ program to calculate the maximum deflection at the end point of a cantilever beam when a load weight W is applied. Use the formula: maximum deflection, where l is the length of the beam, h is the height, b is the width and E the modulus of elasticity. Test your function using the following input values: W =1000, E = 1.49*10⁹, l = 3, b = 0.2, h = 0.3.