#include <cstdlib>
#include <iostream>

using namespace std;

// function phototypes
double computeMaxBendingMoment(double x, double w, double l);

int main(int argc, char *argv[])
{
    // Parameter Declarations
    double x;  // distance
    double w;  // weight
    double l;  // beam length
    double max_bending_moment;
    double max_bending_moment_half;
    
    // LOGO
    cout << "----------------------------------------------------------" << endl;
    cout << "           CS135 Assignment 2: Bending Moment             " << endl;
    cout << "                       By Chang Jia                       " << endl;
    cout << "----------------------------------------------------------" << endl;
    cout << endl;
     
    // Get Inputs
    cout << "Enter x (distance of w), w (weight), and l (beam length): ";
    cin >> x >> w >> l;
    
    // Print Outputs
    cout  << "x = " << x << ", w = " << w << ", l = " << l << endl; 
    //function call
    max_bending_moment = computeMaxBendingMoment( x, w, l);
    cout << "The maximum bending moment for distance " << x << " is: " << max_bending_moment << endl;
    //function call
    max_bending_moment_half = computeMaxBendingMoment( (x/2), w, l);
    cout << "The maximum bending moment for distance " << x/2 << " is: " << max_bending_moment_half << endl;       
    cout << endl; 
       
    system("PAUSE");
    return EXIT_SUCCESS;
}

// Function Body
double computeMaxBendingMoment(double distance, double weight, double length)
{
    double moment;
    moment = distance*weight*((length - distance)/length);   
    return moment;
}