help with while statement for college project

This is a discussion on help with while statement for college project within the C Programming forums, part of the General Programming Boards category; So im trying to work on this project but i'm not clear on the while statement and I know that ...

  1. #1
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    help with while statement for college project

    So im trying to work on this project but i'm not clear on the while statement and I know that what I have isn't working because my calculations are all wrong. I've attached what I have so far and my objective is to take and to enter a fee amount, a monthly payment amount, and a deposit amount and have the C program continue to count payment numbers until the amount owed reaches 0. I'm just not sure how to fix this.
    Attached Files Attached Files

  2. #2
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    Post your code to the forum using code tags, please.

    I'm not about to download a doc file (of unknown format) to look at it.

  3. #3
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    insert
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    int main(void)
    
    {
    
    	int acct_num, date1, date2, date3, pymt_num;
    	float total_paid, out_bal,fee, init_pay, mon_pay, bal_due;
    
    
    	printf("\n\n	Enter Account Number	");
    	scanf("%d" , &acct_num);
    	printf("\n\n	Enter Fee	");
    	scanf("%8.2f", &fee);
    	printf("\n\n	Enter Initial Payment	");
    	scanf("%8.2f", &init_pay);
    	printf("\n\n	Enter Monthly Payment		");
    	scanf("%8.2f", &mon_pay);
    	printf("\n\n	Enter Date	");
    	scanf("%d%d%d" , &date1, &date2, &date3);
    	fflush(stdin);
    	system("cls");
    
    
    	pymt_num = 0;
    
    
    
    
    
    	while (out_bal >= 0.0)
    		{
    			pymt_num = pymt_num + 1;
    			bal_due = fee - init_pay;
    			out_bal = bal_due - mon_pay;
    			total_paid = init_pay + mon_pay;
    
    		}
    
    
    
    	printf("\n\n Patient Account Number: %d", acct_num);
    	printf("\n Consultation Date:     %d/%d/%d", date1, date2, date3);
    	printf("\n\n\n\n Treatment Fee:     %8.2f", fee);
    	printf("\n Initial Payment:   %8.2f", init_pay);
    	printf("\n Balance Due:       %8.2f", out_bal);
    	printf("\n\n\n Payment    Due        Payment   Total  Outstanding");
    	printf("\n Number     Date       Amount    Paid    Balance ");
    	printf("\n\n   %d      %d/%d/%d   %8.2f %8.2f %8.2f",
    	pymt_num, date1, date2, date3, mon_pay, total_paid, out_bal);
    	
    
    
    
    	return(0);
    }

  4. #4
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    im sorry, im new, i didn't realize

  5. #5
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    Quote Originally Posted by fsutati View Post
    im sorry, im new, i didn't realize
    Not a problem....

    Ok a few things...
    First your loop is repeatedly subtracting the intial payment which should be taken only once above the loop.

    Second your balance due inside the loop never changes, thus the outstanding balance will never decrease.

    You need to set out_bal once outside the loop and crunch it inside the loop.
    ( out_bal = fee - init_pay then out_bal -= mon_pay )

    The same rules will apply to calculating the total paid... initialize once outside the loop, crunch inside the loop.

  6. #6
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    The initial payment subtraction, should be done outside the while loop. Clearly, there will be only ONE initial payment, and it should not be subtracted from the balance, every month.

    Well dam Sam -- I've been ninja-posted!!

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    Ok, I did what you said (I think) but something still isn't right. For example, when I compile and execute the program, my professor has given me the following information but when I execute it's taken the values I'm entering and turning it to a decimal. For example, if I enter 2500 for the fee, it turns it into 0.25.

    insert
    Code:
    #include <stdio.h>
    #include <stdlib.h>
    
    int main(void)
    
    {
    
    	/*	Dr. Zalfolks fees*/
    	/*	tatiana saavedra	*/
    	/*	computer programming tues 530pm	*/
    	/*	Project 3   10/18/10 */
    
    	int acct_num, date1, date2, date3, pymt_num;
    	float total_paid, out_bal, fee, init_pay, mon_pay, bal_due;
    
    
    	printf("\n\n	Enter Account Number	");
    	scanf("%d" , &acct_num);
    	printf("\n\n	Enter Fee	");
    	scanf("%8.2f", &fee);
    	printf("\n\n	Enter Initial Payment	");
    	scanf("%8.2f", &init_pay);
    	printf("\n\n	Enter Monthly Payment		");
    	scanf("%8.2f", &mon_pay);
    	printf("\n\n	Enter Date	");
    	scanf("%d%d%d" , &date1, &date2, &date3);
    	printf("\n\n	Enter Payment Number	");
    	scanf("%d" , &pymt_num);
    	fflush(stdin);
    	system("cls");
    
    
    	pymt_num = 1;
    	bal_due = fee - init_pay;
    	out_bal = bal_due - mon_pay;
    	total_paid = init_pay + mon_pay;
    
    
    
    
    
    	while (out_bal >= 0.0)
    		{
    			pymt_num = pymt_num + 1;
    			out_bal = bal_due - mon_pay;
    			total_paid = init_pay + mon_pay;
    
    		}
    
    
    
    	printf("\n\n Patient Account Number: %d", acct_num);
    	printf("\n Consultation Date:     %d/%d/%d", date1, date2, date3);
    	printf("\n\n\n\n Treatment Fee:     %8.2f", fee);
    	printf("\n Initial Payment:   %8.2f", init_pay);
    	printf("\n Balance Due:       %8.2f", out_bal);
    	printf("\n\n\n Payment    Due        Payment   Total  Outstanding");
    	printf("\n Number     Date       Amount    Paid    Balance ");
    	printf("\n\n   %d      %d/%d/%d   %8.2f %8.2f %8.2f",
    	pymt_num, date1, date2, date3, mon_pay, total_paid, out_bal);
    	printf("\n\n******Payment Schedule Printed By: Tatiana Saavedr..........****\n\n");
    
    
    
    	return(0);
    }

  8. #8
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    Did you try entering $2500.00 ?
    What does that give you?

  9. #9
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    Code:
    Ok, I did what you said (I think) but something still isn't right. 
    For example, when I compile and execute the program, my professor 
    has given me the following information but when I execute it's taken
     the values I'm entering and turning it to a decimal. For example, if I 
    enter 2500 for the fee, it turns it into 0.25.
    I am writing an identical program. I am having the SAME exact problem with my program (thread: Money Issues)

    What I have done (it doesn't work for odd dollar amounts, but it gets the job done for what is required by my teacher) is I made them all ints and then output > printf("%d.00", amount)

    See the thread from yesterday and you will see what my code looks like to make the program work. The .00 isn't on that version...but it is easy to add.

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