Final Project ( Studies Loan Calculator ) Lutfi/Firdaus/Amira

Eh..
nie bkan mcm program kt tenet 2 kew..

nie bkan hasil kjer sndri..
stkt edit jer..
x pyah la..

owh.. betul ker... ahli kumpulan sila komen

Anyway, this project is the best

fitnah smua 2...
mmg la ade program kt tenet..
tp smua bnde xme dgn program yg sy buat...
kalo nk tgk sy boleh upload source code internet yg sy dpt 2...

Code:


#include <iostream>
#include <iomanip>
#include <string>
#include <math.h>
#include <windows.h>

//set namespace to eliminate the need for std:: prefixes
using namespace std;

//public defines
int runloan();
bool isvalidnumber(string * puserinput);
void printheader(int iPrintYear);
HANDLE hConsole = GetStdHandle(STD_OUTPUT_HANDLE);  //get handle to standard output

int main()
{
   //set color of output to intense white text with standard black background
    SetConsoleTextAttribute(hConsole, 15 | 1);

   
   runloan(); //run the main loan routine
   
   system("pause");
    return 0;
}


int runloan()
{
   string userinput;
   double amount, rate, term, payment, interest, principle;
   int iCounter=0, iYear=1, loanchecker;
   string * puserinput = &userinput; // pointer to user input variable

   //formatting output with a decimal place of 2
   cout << setiosflags(ios::fixed | ios::showpoint) << setprecision(2);

   //get loan amount routine
   userinput = "";
   while(!isvalidnumber(puserinput) || userinput.length() == 0) //loop till valid numeric number is found and is not empty
   {
      cout << "Enter the amount of loan: ";
      getline(cin, userinput);
   }
   amount = atof(userinput.c_str()); //convert string to double
   loanchecker = (int)amount;

   //get interest rate routine
   userinput = "";
   while(!isvalidnumber(puserinput) || userinput.length() == 0) //loop till valid numeric number is found and is not empty
   {
      cout << "Enter the interest rate: ";
      getline(cin, userinput);
   }
   rate = atof(userinput.c_str()); //convert string to double

   //if rate is a not a decimal convert value to decimal
   if(rate > 1)
      rate = (rate/100);

   //get term routine
   userinput = "";
   while(!isvalidnumber(puserinput) || userinput.length() == 0) //loop till valid numeric number is found and is not empty
   {
      cout << "Enter the total number of years: ";
      getline(cin, userinput);
   }
   term = atof(userinput.c_str()); //convert string to double
   
   //calculate the monthly payment
   payment = (amount * pow((rate / 12) + 1, (term * 12))* rate / 12)/(pow(rate / 12 + 1, (term * 12)) - 1);
   
   //output loan specific data header information
   cout << "\nUser Specified Loan Details" << endl;
   cout << setfill('-') << setw(80) << "-" << endl;
   
   //output report hearder information
   printheader(iYear);

   //output the monthly payment
   while (loanchecker != 0)
   {
      //increment counters
      iCounter++;

      //calculate interset rate based on remaining loan amount
      interest = (amount * rate) / 12;

      //calculate new loan amount after payment plus interest
      amount = (amount - payment) + interest;

      //calculate principle by subtracting the interest
      principle = payment - interest;
      loanchecker = (int)amount;

      //prevent a negative number once loan is paid off
      if (loanchecker == 0) amount = 0;

      //output loan information for a specific month
      cout << iCounter << "\t" << payment << "\t\t" << interest << "\t\t" << principle << "\t\t" << amount << endl;

      if (iCounter == 12 && amount != 0) //allow screen data to be buffered if the loan amount is not 0 per year
      {
         iCounter = 0;
         iYear++;
         cout << "Press enter to continue...";
         getline(cin, userinput);

         //output report hearder information
         printheader(iYear);
      }

   }
   return 0;
}


bool isvalidnumber(string * puserinput)
{
    bool decimal = true;
   string checkstring = *puserinput; //convert memory location to string
    for(int count=0; count < (int)checkstring.length(); count++) //loop the char array for invalid numeric data
    {
      if(isdigit(checkstring[count]) || checkstring[count] == '.' && decimal == true)
        {
            if(checkstring[count]== '.') //only allows one decimal place
            {
                decimal = false;
            }
        }
        else
        {
            return false; //numeric validation failed
        }
    }
    return true; //numeric validation success
}

void printheader(int iPrintYear)
{
   //clear screen
   system("cls");
         
   //set color of output
    SetConsoleTextAttribute(hConsole, 12);

   //output current reporting year
   cout << "\nDetails for year: " << iPrintYear << endl;

   //set color of output
    SetConsoleTextAttribute(hConsole, 14);

    //output loan payment specific data header information
   cout << "Month\tPayment\t\tInterest\tPrinciple\tLoan Amount" << endl;
   cout << setfill('-') << setw(80) << "-" << endl;

   //reset color of output to initial color text
    SetConsoleTextAttribute(hConsole, 15);
}


utk mengelakkan dengki ngan fitnah org2 kat ats 2.
ni source code yg aku dpt dr internet 2.
boleh tgk dan bandingkan mcm mne.
kalo tgk output mmg sama tp bandingkan cara penulisan program.
org2 yg pandai pasal program saja tahu sama atau tidak source code ni.
kalo rse2 xtau nk bezakan baik xyah blaja c++.

Ok.... saya faham.. dari masa presentation pun saya dah tau, group lutfi faham apa yg dibuat.
It's not a big issue.
Ok.. happy holiday to u all