cdez/CS136-Projects
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Modified Project One, Added Project Five

Browse source 
+- Project 1 Folder
++ Project 5 Folder/Files
This commit is contained in:
Charles Descamps 2022-10-09 13:50:32 -07:00
parent 7b34fcad4d
commit eb9e0e3afc
9 changed files with 1121 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

178
PA01_0907/Project_1.c
View file

@ -1,178 +0,0 @@
// header files
#include "Console_IO_Utility.h"
#include <math.h>
#include <stdio.h>
// global constants
const double PERCENTAGE_CONVERSION = .01;
const int MONTHS_IN_YEAR = 12;
const int TWO_DIGITS = 2;
const int TWO_ENDLINES = 2;
const char PERCENT_CHAR = '%';
// prototypes
// none
// main program
int main()
{
// initialize function/variables
// initialize variables
double purchasePrice, downPayment, interestRate, borrowedAmount;
double monthlyInterest, paymentNumerator, paymentDenominator;
double monthlyPayment, totalOfPayments, interestPaid, totalPurchasePrice;
int numYears, numPayments;
// show title
// function: printString, printEndline(s)
printEndline();
printString( "Monthly Payment Calculator" );
printEndline();
printString( "==========================" );
printEndlines( TWO_ENDLINES );
// get input
// show data entry
// function: printString, printEndline(s)
printString( "Data Entry" );
printEndline();
printString( "----------" );
printEndlines( TWO_ENDLINES);
// get purchase price
// function: promptForDouble
purchasePrice = promptForDouble( "Enter the purchase price ($): " );
// get down payment
// function: promptForDouble
downPayment = promptForDouble( "Enter the down payment ($): " );
// get annual interest rate
// function: promptForDouble
interestRate = promptForDouble( "Enter the annual interest rate (%): " );
// get number of years
// function: promptForInteger
numYears = promptForInteger( "Enter the number of years (Y): " );
// COMPLETE: process data, calculate payment
// calculate borrowed amount (aka principal),
// using the purchasePrice and subtract the downPayment.
borrowedAmount = purchasePrice - downPayment;
// calculate monthly interest, dividing the annual interest rate by 12.
monthlyInterest = (interestRate*PERCENTAGE_CONVERSION) / MONTHS_IN_YEAR;
// calculate number of payments, using years times 12 for num payments.
numPayments = numYears * MONTHS_IN_YEAR;
// calculate payment numerator, using mortgage equation
paymentNumerator = pow((1.0 + monthlyInterest), numPayments);
// calculate payment denominator, using mortgage equation
// function: pow
paymentDenominator = pow((1.0 + monthlyInterest), numPayments) - 1.0;
// calculate payment, dividing the rest of the loan between months.
monthlyPayment = (borrowedAmount * monthlyInterest)
* (paymentNumerator/paymentDenominator);
// calculate total of all payments,
// multiply the monthly payment by the amount of payments
totalOfPayments = monthlyPayment * numPayments;
// calculate interest paid,
// take the total payments and subtract the borrowed amount.
interestPaid = totalOfPayments - borrowedAmount;
// calculate total purchase price,
// adding the amount of total of all payments, added to down payment.
totalPurchasePrice = totalOfPayments + downPayment;
// show results
// show title
// functions: printString, printEndline(s)
printEndline();
printString( "Calculation Results" );
printEndline();
printString( "-------------------" );
printEndline();
// show total purchase price
// functions: printString, printDouble, printEndline(s)
printEndline();
printString( "Total Principal : $" );
printDouble( borrowedAmount, TWO_DIGITS );
printEndline();
// show down payment
// functions: printString, printDouble, printEndline(s)
printEndline();
printString( "Down Payment : $" );
printDouble( downPayment, TWO_DIGITS );
printEndline();
// show annual interest rate
// functions: printString, printDouble, printCharacter, printEndline(s)
printEndline();
printString( "Annual Interest Rate : " );
printDouble( interestRate, TWO_DIGITS );
printCharacter( PERCENT_CHAR );
printEndline();
// show total number of payments
// functions: printString, printInteger, printEndline(s)
printEndline();
printString( "Number of Payments : " );
printInteger( numPayments );
printEndline();
// show monthly payment
// functions: printString, printDouble, printEndline(s)
printEndline();
printString( "Monthly Payment : $" );
printDouble( monthlyPayment, TWO_DIGITS );
printEndline();
// show total interest paid
// functions: printString, printDouble, printEndline(s)
printEndline();
printString( "Total Interest Paid : $" );
printDouble( interestPaid, TWO_DIGITS );
printEndline();
// show total cost of loan
// functions: printString, printDouble, printEndline(s)
printEndline();
printString( "Total Cost of Loan : $" );
printDouble( totalOfPayments, TWO_DIGITS );
printEndline();
// show total purchase price
// functions: printString, printDouble, printEndline(s)
printEndline();
printString( "Total Purchase Price : $" );
printDouble( totalPurchasePrice, TWO_DIGITS );
printEndline();
// end program
// show end program
// function: printString, printEndline
printEndline();
printString( "End Program" );
printEndline();
// return program success
return 0;
}
// supporting functions
// none