Help with a simple CH program

[CheshireCat]

I am helping my niece with a program in the language CH.

This is the first program she has been asked to do in her CS101 class. The program involves loops and IF statements, which is a bit much for a first program. She was given a few pages of notes, but no class instruction.

I downloaded "CH Standard" and started looking at it. I cannot find the error in her program and I do not know if I will have time to look at it again before she turns it in.

Can anyone her take a look at it and see if you find the error.

If so, post on this thread and I will PM you the program. It's not long or difficult.

[CheshireCat]

1. Kick

I need your help!

[motely36]

2. I can look, don't know if I can help

[tk2kewl]

3. i will look at it

no promises

[CheshireCat]

4. Thanks!

I will post the program specs and the CH program in just a minute.

[CheshireCat]

5. Program specs and code

Using a while loop and a nested if statement.

When you went off to college your parents gave you a credit card. To try out the credit card, you charged some new clothes, a new laptop, and a printer. Your parents gave you enough money to pay that bill, but you used the money for something else. Winter Break came, and you took a trip to Florida. All of your expenses went on the charge card. Then came the Spring Break skiing weekend in Aspen; you needed a new skiing outfit. Who knew it would be so expensive? Staying in the lodge, equipment rentals, and those expensive restaurants all went on that credit card. You continued to use the credit card. You are almost ready to graduate, and your parents asked if you ever use that emergency credit card that you got your freshman year. Suddenly you realize that you are in debt! You have only been paying the minimum amount each month.

Write a program that will calculate the number of months it will take you to pay off the credit card debt if you quit using the credit card today.

Input:

-The amount that you owe (the balance)
-The yearly interest rate of the credit card
-The amount that you think you can pay each month

Output:

-A phrase before each input statement so that you will know which value to enter.

-The payment number and the remaining balance for each payment until the debt is paid off. Use endl so that it will be easy to read on the screen.

-A message if it will take less than a year, more than two years, or more than five years to pay off the debt.

Calculations:

-The yearly interest rate divided by 12 will give the monthly interest rate. For each month, add the monthly interest rate times the current balance to the current balance and subtract the monthly payment.



Ch Code:


#include <iostream.h>
main ( )
{
float balance, YRate, MRate, payment;
int j,i;
cls;
cout << "Enter the amount you owe on this credit card: " << endl;
cin >> balance;
cout << "Enter yearly interest rate on credit card: " << endl;
cin >> YRate;
cout << "Enter the amount you can afford to pay each month: " << endl;
cin >> payment;
MRate = YRate/12;
i = 0;
j = 1;
while(j) {
balance = ((MRate * balance)+ balance) - payment;
If (balance > 0)
i = i + 1;
else
j = 0;
}
getchar();
printf("number of months to payoff credit card is \n");
printf(i);

}

[sir_captain]

6. Seems to me

that the problem are the printf functions which won't work without stdio.h. Those are plain-vanilla C functions that probably shouldn't be mixed in with the cins and couts. Either change them to one cout statement or add an #include stdio.h to make them work.

[sir_captain]

7. Also

clearly, they want a different message for the three different results, so that portion of the program ought to be rewritten anyway.

[CheshireCat]

9. Yes

If I care even get past the syntax errors, I will add it.

[motely36]

8. I think I know

if the interest rate is entered as an integer such as 12, the program will not work because your simply dividing the interest rate by 12 and then multiplying it by balance. And balance * balance -payment will never equal 0. But I tried it by entering a decimal (.12) and it worked. So either you need to make sure you enter a decimal or mod the percent.

Now I ran it on my c++ compiler and it worked.

Hope this helps

[CheshireCat]

12. Here are the error messages

ERROR: missing ';'
ERROR: syntax error before or at line 38 in file 'lab7-2.ch'
==>: i = i + 1;
BUG: i<== ???
ERROR: Can't have an 'else' here
ERROR: syntax error before or at line 39 in file 'lab7-2.ch'
==>: else
BUG: else<== ??? bug may be here
ERROR: function 'If()' not defined
ERROR: cannot execute command 'lab7-2.ch'
c:/ch>

Where
-lab7-2.ch is the name of my Ch program
-My program does not have line numbers.

Would try the integer rate, but I cannot get past the syntax errors

I added

#include <stdio.h>

and

YRate = YRate/100;

The program specs require that the balance, YRate, MRate, payment be floating point.

[CheshireCat]

10. The program must be run using a CH compiler

Meanwhile, I will make the changes suggested here and let you know the results.

Thanks again, everyone!

[motely36]

11. Sorry, I don't have one of those

[CheshireCat]

13. Thanks anyway.