Need Help With Multi Function Program

[WackoWolf]

I have been going crazy all night and a good part of today. I can't get pass the build, I think I have my functions wrong. Can someone Please Help Me. I am going nuts. Here is what I have for code.

Thanks

#include "stdafx.h"
#include <math.h>

//#using <mscorlib.dll>

//using namespace System;

void display_statement (double, double, double, double, int, double);
double Tinterest_paid(double, int);
double payment_amount (double, double, int);



int main(void)

{
double a=1;
double b=1;
double c=1;
double d=1;
double e=1;
double x=1;
double i;                     // Interest_Rate Monthly
double p;                     // Principal
int n  ;                      // Number Payments display_statement
double Payment_Amount;
double payment;
double Total_Amount;
double total_amount;
double Tamount_paid;
double total_interest;
double Tinterest_paid(double, int);
double payment_amount (double, double, int);


	printf("Please Enter Interest Rate ");            // Key As n.n
		scanf("%lf",&i);
	printf("Please Enter Loan Amount ");              // Amount of Loan
		scanf("%lf",&p);
	printf("Please Number Of Monthly payments ");     // Number Of Monthly 
		scanf("%d",&n);

	payment = Payment_Amount (i,p,n);
    Total_Amount = Tamount_paid(payment,n);
    total_interest=Tinterest_paid(total_amount,p);

void display_statement (double, double, double, double, int, double);

}

{
	double x;

	x = Tinterest_paid(200000, 150000);
	printf("The result is\n\n %f', X);

		return 0;



}

double Tinterest_paid (double amount_paid, double Principal)

{

	double int_paid;

	int_paid = amount_paid - Principal;

	return (int_paid);

{

	double x;
	x = Payment_Amount(5.5, 100000, 60);

}

double Payment_Amount (double Interest_Rate, double Principle, int Number_Payments)

{
	double a, payment;

	a = Interest_Rate/100;
	a= a/12;

	payment = (a* Principle)/ (1 - pow((1+a), -Number_Payments));
	return(payment);
}

{
	display_statement (a, b, c, d, x, e);
	return 0;

}

void display_statement (double payment, double loan_payment, double Tinterest, double Principal, int Number_Payments, double interestrate)

{

	printf("Monthy Payment: $%.2f\n\n", payment);
	printf("Total Loan Amount; $%.2f\n\n", loan_Amount);
	printf("Total Interest Payment: $%.2f\n\n", Tinterest);
	printf("Principal: $%.2f\n\n", Principal);
	printf("Number Of Payments: %d\n\n", Number_Payments);
	printf("Interest Rate %.3f percent\n\n", interestrate);

}

[rssmps]

void display_statement (double, double, double, double, int, double);
double Tinterest_paid(double, int);
double payment_amount (double, double, int);

for starters, what's wrong with this picture? ;)
also keep in mind case sensitivity.

[WackoWolf]

Not sure I been at this for the last 13 hours, I am starting to see double. Could you please Help.

Thank You

[rssmps]

your function prototype is not the same as your function definition.





payment = Payment_Amount (i,p,n);
Total_Amount = Tamount_paid(payment,n);
total_interest=Tinterest_paid(total_amount,p);

void display_statement (double, double, double, double, int, double);

}

also, why is this prototype here?

[Mansur]

Hi
Sorry... my English language is bad
I am spend to much time to correct your mistake, but I am don't know what your programming doing exactly.
Be careful to next notes:
1- some time you declare variable "double" and try to use it "int".
2- don't use variable and function same name you will confused.
3- Use one way to give the variable name, don't use x,s,w1…

The program is work now but, must you complete it
I have wrong result when use "scanf" ??? I used "cin"

Finally I try to help you if I am do mistake in my replay I am sorry

// program for do something
//by your name

#include "stdafx.h"
#include <math.h>
#include <iostream.h>


// Declare functions only 

// function1 for ...
double Payment_Amount (double,double,int);
//function2 for ...
double Tinterest_paid(double, double);
// function1 for ....
void display_statement (double, double, double, double, double, double);




// Declare variables only 

//double total_amount,total_interest;   // your don't used these variables
//double Payment_Amount; //have same function name .

int n ;												 // Number Payments display_statement
double Total_Amount,Tamount_paid,p,i,payment;
double a=1,b=1,c=1,d=1,e=1,int_paid=1;							// Interest_Rate Monthly



int main(void) {

//scanf("%lf",&p);

	printf("Please Enter Interest Rate ");            // Key As n.n
	//		scanf("%lf",&i);
	cin >> i;
	
	printf("Please Enter Loan Amount ");              // Amount of Loan
	//	scanf("%lf",&p);
	cin >> p;
				
	printf("Please Number Of Monthly payments ");     // Number Of Monthly 
//		scanf("%lf",&n);
	cin >> n;

	
	payment = Payment_Amount (i,p,n);
	printf("%f\n",payment);  
	
	
	 //Total_Amount = Tamount_paid(payment,n);   //don't used
    
	 //total_interest=Tinterest_paid(total_amount,p); //don't used


	 
		int_paid = Tinterest_paid(200000, 150000);
	
		printf("The result is %f\n", int_paid);

		display_statement (a, b, c, d, int_paid, e);

	return 0;

}

//function 1 
double Payment_Amount (double Interest_Rate, double Principle, int Number_Payments)

	{
	
		a = (Interest_Rate/100)/12;
  
		payment = (a * Principle)/ (1 - pow((1+a),-Number_Payments));
 
		return (payment);
	}

// function2 
double Tinterest_paid (double amount_paid, double Principal)

	{
	int_paid = amount_paid - Principal;

	return (int_paid);
	}

// function 3
void display_statement (double payment, double loan_payment, double Tinterest, double Principal, double Number_Payments, double interestrate)

{

	printf("Monthy Payment: $%.2f\n\n", payment);
	printf("Total Loan Amount; $%.2f\n\n", loan_payment);
	printf("Total Interest Payment: $%.2f\n\n", Tinterest);
	printf("Principal: $%.2f\n\n", Principal);
	printf("Number Of Payments: %d\n\n", Number_Payments);
	printf("Interest Rate %.3f percent\n\n", interestrate);

}



/*
	double x;
	x = Payment_Amount(5.5, 100000, 60);

}



	
	{
	return 0;
	}*/


	 /*  void display_statement (double, double, double, double, int, double);
		{
		
		}


	//	double x;

*/