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Question in c# loop
Question

i need to write a loop acourding to the Question:
A savings account in a bank pays interest at a fixed rate on the amount in the account; that is, at the end of each year a fixed percentage of the amount is added to the amount. For example, if the account was opened with a deposit of $100,000 at an interest rate of 10%, $10,000 would be paid in at the end of the first year (10% of $100,000 = $10,000), so there would now be $110,000 in the account. At the end of the second year $11,000 would be paid in (10% of $110,000 = $11,000) so there would now be $121,000 in the account. At the end of the third year there would be $133,100, and so on.
Write a loop in the space below to update the amount in the account for a specified number of years, using the following variables which are provided for you:
 amount is the amount used to open the account
 rate is the interest rate as an integer (so 10 means an interest rate of 10%)
 years is the number of years that the account is kept for
using System; class InterestCalc { static void Main () { double amount = double.Parse(Console.ReadLine()); int rate = int.Parse(Console.ReadLine()); int years = int.Parse(Console.ReadLine()); while () { amount += ((amount * rate) / 100) * years; } Console.WriteLine("The amount after {0} years at {1}% is {2}",years,rate,amount); } }
Answers

Hello c_motti,
If you just want to use "while" statement to calculate the result of interest rate.
static void Main() { Boolean flag = true; double amount = double.Parse(Console.ReadLine()); int rate = int.Parse(Console.ReadLine()); int years = int.Parse(Console.ReadLine()); int i = 0; while (flag) { amount += amount * rate / 100; i++; if (i == years) flag = false; } Console.WriteLine("The amount after {0} years at {1}% is {2}", years, rate, amount); Console.Read(); }
Result
Sincerely,
Fei Hu
MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com. Proposed as answer by Stanly Fan Friday, November 24, 2017 6:44 AM
 Marked as answer by c_motti Friday, November 24, 2017 11:13 AM

Hello,
Your post looks like programming class assignment... We really discourage freebies
because you are suppose to learn. While the other replies are solution... They did
not help you learn. But I will help you in the correct manner.
Looking at your assignment description and code, we know the variables 'amount' is
accumulative, 'rate' is fixed and 'years' can vary in value. Now, we need to decide how
the loop can be controlled,i.e. 'While()'. Because your assignment reads as "update
the amount in the account for a specified number of years". This tell us what variable
could be used as the condition for 'While()' loop, 'years'.
Example
while ( years > 0 ) { amount += ((amount * rate) / 100); // * years would be for gross calculation years; }
The above code will loop While condition of variable 'years' is greater than zero. When the condition
is not then the loop will end. With minor changes to the assignment code, we now have a solution.
While its great that the community is here and freely helps. Sometimes the quick answer isn't helpful.
Hope this helps :)
 Proposed as answer by Fei HuModerator Friday, November 24, 2017 6:44 AM
 Marked as answer by c_motti Friday, November 24, 2017 11:12 AM
All replies

double amount = 100000;
int years = 10;
double rate=1.10;for (int i = 0; i <= years; i++)
{amount=amount*rate;
}
 Edited by ThisNewbie Thursday, November 23, 2017 10:53 PM

Hello c_motti,
If you just want to use "while" statement to calculate the result of interest rate.
static void Main() { Boolean flag = true; double amount = double.Parse(Console.ReadLine()); int rate = int.Parse(Console.ReadLine()); int years = int.Parse(Console.ReadLine()); int i = 0; while (flag) { amount += amount * rate / 100; i++; if (i == years) flag = false; } Console.WriteLine("The amount after {0} years at {1}% is {2}", years, rate, amount); Console.Read(); }
Result
Sincerely,
Fei Hu
MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com. Proposed as answer by Stanly Fan Friday, November 24, 2017 6:44 AM
 Marked as answer by c_motti Friday, November 24, 2017 11:13 AM

Hello,
Your post looks like programming class assignment... We really discourage freebies
because you are suppose to learn. While the other replies are solution... They did
not help you learn. But I will help you in the correct manner.
Looking at your assignment description and code, we know the variables 'amount' is
accumulative, 'rate' is fixed and 'years' can vary in value. Now, we need to decide how
the loop can be controlled,i.e. 'While()'. Because your assignment reads as "update
the amount in the account for a specified number of years". This tell us what variable
could be used as the condition for 'While()' loop, 'years'.
Example
while ( years > 0 ) { amount += ((amount * rate) / 100); // * years would be for gross calculation years; }
The above code will loop While condition of variable 'years' is greater than zero. When the condition
is not then the loop will end. With minor changes to the assignment code, we now have a solution.
While its great that the community is here and freely helps. Sometimes the quick answer isn't helpful.
Hope this helps :)
 Proposed as answer by Fei HuModerator Friday, November 24, 2017 6:44 AM
 Marked as answer by c_motti Friday, November 24, 2017 11:12 AM


Hello c_motti,
If you issue has been solved, you could close the thread by marking the useful reply as answer. This can be beneficial to other community members reading this thread. Thanks a lot.
Best regards,
Fei Hu
MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue, and to click "Unmark as Answer" if not. This can be beneficial to other community members reading this thread. If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com. 

double amount = double.Parse(Console.ReadLine()); int rate = int.Parse(Console.ReadLine()); int years = int.Parse(Console.ReadLine()); int intYrCtr = 0; while (years>0) { double dIntAmt = (amount * rate) / 100; years; ++intYrCtr; Console.WriteLine("The interest amount is {3} after {0} years at {1}% of {2}", intYrCtr, rate, amount, dIntAmt); amount += dIntAmt; } Console.WriteLine("The amount after {0} years at {1}% is {2}",intYrCtr,rate,amount);
Every thing is perfect as long as you share
 Proposed as answer by Chakravarthy Friday, November 24, 2017 6:49 AM
 Unproposed as answer by Sabah ShariqMVP, Moderator Friday, November 24, 2017 10:17 AM