Solution

// Programmer: Clayton Price 9/11/17

// File: hw2.cpp

// Purpose: this file contains the main function for the program that inputs

// user input to determine lens thickness.

#include <iostream>

using namespace std;

int main()

{

/* ------------------- DECLARATIONS ---------------- */

const int REFRACT_INDEX = 2;

const float NICKS_MIN_INCOME_CORRECTION_FACTOR = 4.2;

int left_acuity; //user's left eye acuity

int right_acuity; //likewise right eye

string name;

int soc_sec; //user's last four digits of soc sec

int ins_adjustment; //tens digit of soc sec

int lens_thickness;

bool has_ins = false; //indicates user has ins or not

/* ------------------ GREETING & INPUT ----------- */

cout<<"\n\n\n\tWELCOME TO LENS-O-MATIC"<<endl<<endl;

cout<<"Please enter your first name: ";

cin>>name;

cout<<"Ok, "<<name<<" now enter the following info: "<<endl;

cout<<"\tleft eye acuity: ";

cin>>left_acuity;

cout<<"\tright eye acuity: ";

cin>>right_acuity;

cout<<"\tlast four of ss: ";

cin>>soc_sec;

cout<<"\tdo you have insurance(1 - yes 0 - no): ";

cin>>has_ins;

/* ----------------- COMPUTATION --------------------- */

ins_adjustment = (soc_sec % 100) % 10;

lens_thickness = static_cast<int>((3 + static_cast<float>(left_acuity)/

(right_acuity + REFRACT_INDEX)) *

NICKS_MIN_INCOME_CORRECTION_FACTOR +

has_ins * ins_adjustment);

/* ----------------- OUTPUT OF INFO ----------------- */

cout<<"\n\nExcellent...the thickness of your lens'ss's should be: "<<endl

<<endl<<"\t\t"<<lens_thickness<<" cm"<<endl<<endl;

cout<<"Bye for now .......... exiting"<<endl<<endl;

return 0;

}