HELPPP PLEASE! Quick!

[ejcpp]

This is my project:
Assuming there are no deposits other than the original investment, the balance in a savings account after one year may be calculated as:

Amount = Principal * (1 + Rate / T) T

Principal is the balance in the savings account initially, Rate is the interest rate and T is the number of times the interest is compounded during a year (T is 4 if the interest is compounded quarterly).

You are going to write a program that asks the user for the principal, the interest rate and the number of times the interest is compounded. It should display a report similar to

Interest Rate: 4.25%

Times Compounded: 12

Principal: $ 1000.00

Interest: $ 43.34

Amount in Savings: $ 1043.34

When you run the program to hand in, use the following values (you will run it two times, which means you will do ./a.out two times; you only have to do the cat and g++ one time in the script):

Run 1 Run 2

Principal 548.32 6763.00

Interest rate 4.25% 2.5%

Times compounded 12 4

This is my code so far:

#include <iostream>
#include <iomanip>


using namespace std;

int main(int argc, const char * argv[])

{
//Declarations

double rate; //Interest Rate 1 year
double time; // Number of time compounded
double principal; //Total amount before Interest Rate
double newbalance; //Total amount after Interest Rate
double amount of interest;

//Inputs

std::cout << "Enter Principal Amount" << endl;
std::cin >> Interest rate



//Calculations/ Processing

TotalAmount = principal*(1+rate/t)^t;


//Output

std::cout << "The rate of return is" << rate << endl;
std::cout << "The current balance is" << principal << endl;
std::cout << "Interest will be accured" << period << 'time per year << endl;









return 0;
}



What am I doing wrong. What else do I have to do.

[coltehrman]

Your code is a mess....
1)You are using namespace std so dont't write std::cout or std::cin
2)A variable cannot have spaces in it (double amount of interest)
3)Why are you passing arguments to main? No need
4)(cin >> Interest rate) there is no "Interest rate" variable and even if there was it cannot have a space
5)OMG your program is a mess.... sorry

[ejcpp]

yea i know it's a mess. I'm new to this stuff.
do you know how i would write the formula TotalAmount = principal*(1+rate/t)^t in this program

[coltehrman]

well in c++ that would be fine except for the ^t part... but if you #include <cmath>
you can use the function pow(num, what power to be raised to) to raise a number to a power..so
TotalAmount = principal * pow((1+rate/t), t);
I believe
Not sure tho.... anyways if you need anything else let me know

[ejcpp]

if i wanted to declare "t" would i write int t=time?

[coltehrman]

"time" is not an integer so no that would be incorrect
you can only use integer values for an int variable
"time" is a string
10 is an int
10.3 is a float or double
't' is a char

[coltehrman]

Also I just looked at the top and it says Amount = Principal * (1 + Rate / T) T
So disregard what I said about raising to the power
it would just be
amount = principal *(1+rate/t)*t
That is.. unless the order of operations is supposed to be calculated a certain way

[ejcpp]

ok gotcha

[coltehrman]

If you want I can write the program for you and show you then you can ask me why I did something a certain way or how somthing works?

[ejcpp]

that would be great. thank you

[coltehrman]

Ok well here is what I can put together... but your guidlines are a little miscommunicated and I am not sure how it is suppose to be.

#include <iostream>
using namespace std;

int main()
{
	double principal, rate, rrate, amount;
	int t;

	cout << "Principal : ";
	cin >> principal;
	cout << "Interest rate : ";
	cin >> rate;
	rrate = rate / 10.0;
	cout << "Times compounded : ";
	cin >> t;

	amount = principal * (1 + rrate / t) * t;

	system("cls");
	cout << "Interest Rate : %" << rate << endl << endl;
	cout << "Times Compounded : " << t << endl << endl;
	cout << "Principal : $" << principal << endl << endl;
	cout << "Amount : $" << amount;

	system("pause>nul");
}

[ejcpp]

I like the way it looks, would you mind labeling the different sections such as
//Declarations
//Inputs
//Calculations/Processing
//Outputs
I'm kind of confused the way you have it.
My teacher wants us to be able to enter the number he has in the specifications to get a specific number for the amount in savings. Thats why he has run 1 and run 2

[coltehrman]

Look buddy I gave you a great starting point, now I am glad to help out but I am not going to do the whole thing for you... sorry. In plus this is your "homework" which you are suppose to learn from.

[ejcpp]

so if i run this program and enter the numbers above in my program specification, will the same amount in savings show up?

[coltehrman]

No... and that is because the formula you gave me is wrong

[ejcpp]

how is the formula wrong, im using the formula above in the assignment
Amount = Principal * (1 + Rate / T) T

[coltehrman]

Well it is wrong... obviously

[ejcpp]

so there's no way to use that formula to get those numbers?

[ejcpp]

i appreciate your help. Will you be able to help me with c++ programs in the future?

[coltehrman]

No problem... and of course!