cdez
7452a9ca4f
Added Project 1/Homework 1 and Lab 1. Modified the Lab 2 folder to match conventions.
121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
// header files
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#include "Console_IO_Utility.h"
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#include <math.h>
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#include <stdio.h>
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// global constants
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const double PERCENTAGE_CONVERSION = .01;
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const int FOUR_DIGITS = 4;
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const int MONTHS_IN_YEAR = 12;
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const int TWO_DIGITS = 2;
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const int TWO_ENDLINES = 2;
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const char PERCENT_CHAR = '%';
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// prototypes
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// none
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// main program
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int main()
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{
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// initialize function/variables
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// initialize variables
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double borrowedAmount, monthlyInterestRate;
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double paymentNumerator, paymentDenominator;
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double monthlyPayment;
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int numMonths;
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// show title
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// function: printString, printEndline(s)
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printEndline();
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printString( "Monthly Payment Calculator" );
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printEndline();
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printString( "==========================" );
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printEndlines( TWO_ENDLINES );
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// get input
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// show data entry
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// function: printString, printEndline(s)
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printString( "Data Entry" );
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printEndline();
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printString( "----------" );
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printEndlines( TWO_ENDLINES);
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// get borrowed amount
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// function: promptForDouble
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borrowedAmount
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= promptForDouble( "Enter the borrowed amount ($): " );
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// get monthly interest rate
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// function: promptForDouble
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monthlyInterestRate
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= promptForDouble( "Enter the monthly interest rate(%): " );
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// get number of months
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// function: promptForInteger
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numMonths = promptForInteger( "Enter the number of months (M): " );
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// process data, calculate payment
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// calculate payment numerator
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monthlyInterestRate = monthlyInterestRate * PERCENTAGE_CONVERSION;
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//paymentNumerator = borrowedAmount * (monthlyInterestRate * (pow((1+monthlyInterestRate), numMonths)));
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paymentNumerator = (1.0 + pow(monthlyInterestRate, numMonths));
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// calculate payment denominator
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// function: pow
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paymentDenominator = (1.0 + pow(monthlyInterestRate, numMonths))-1.0;
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// calculate payment
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monthlyPayment = borrowedAmount * monthlyInterestRate * (paymentNumerator / paymentDenominator);
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// show results
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// show title
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// functions: printString, printEndline(s)
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printEndline();
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printString( "Calculation Results" );
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printEndline();
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printString( "-------------------" );
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printEndline();
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// show borrowed amount
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// functions: printString, printDouble, printEndline(s)
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printEndline();
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printString( "Total Borrowed Amount : $" );
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printDouble( borrowedAmount, TWO_DIGITS );
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printEndline();
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// show monthly interest rate
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// functions: printString, printDouble, printCharacter, printEndline(s)
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printEndline();
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printString( "Monthly Interest Rate : " );
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printDouble( monthlyInterestRate, FOUR_DIGITS );
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printCharacter( PERCENT_CHAR );
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printEndline();
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// show monthly payment
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// functions: printString, printDouble, printEndline(s)
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printEndline();
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printString( "Monthly Payment : $" );
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printDouble( monthlyPayment, TWO_DIGITS );
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printEndline();
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// end program
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// show end program
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// function: printString, printEndline
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printEndline();
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printString( "End Program" );
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printEndline();
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// return program success
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return 0;
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}
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// supporting functions
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// none
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