MATLAB Answers

Not sure why while loop won't run.

1 view (last 30 days)
Chett Manly
Chett Manly on 13 Sep 2021
Commented: Chett Manly on 13 Sep 2021
%trying to run a while loop, (then a for and a forever) but to me the code seems logical but it has a bug that is stopping it.
%The idea is it loops until the balance hits $500000 then plots a graph. kinda out of ideas...
clear; close all; clc
balance(1) = 1000;
contribution = 1200;
M(1) = 1; % month ticker
interest = 0.0025;
while balance < 500000
balance(M) = balance(M-1) + interest*balance(M-1) + contribution;
M(M) = M + 1; % you need to increment months + 1 every cycle
end
%M(M) = M + 1;
plot(balance,M);

Accepted Answer

Matt J
Matt J on 13 Sep 2021
Edited: Matt J on 13 Sep 2021
balance(1) = 1000;
contribution = 1200;
interest = 0.0025;
M = 2; % month ticker
while balance(end) < 500000
balance(M) = balance(M-1) + interest*balance(M-1) + contribution;
M = M + 1; % you need to increment months + 1 every cycle
end
plot(balance);
  1 Comment
Chett Manly
Chett Manly on 13 Sep 2021
%Damn that was a simple mistake I had...
%Added some plot formatting and we are functioning.
balance(1) = 1000;
contribution = 1200;
M(1) = 2; % month ticker
interest = 0.0025;
while balance(end) < 500000
balance(M) = balance(M-1) + interest*balance(M-1) + contribution;
M = M + 1; % you need to increment months + 1 every cycle
end
format bank
plot(balance);
ytickformat('usd')
title('Saving 3% compound')
xlabel('Months')
ylabel('Saving balance')

Sign in to comment.

More Answers (0)

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by