Info
This question is closed. Reopen it to edit or answer.
I wrote a code for determining the volume need for each stage of a rocket
1 view (last 30 days)
Show older comments
clear;clc
%create the statement
radius1=16.5;height1=138.0;radius2=16.5;height2=81.5;radius=30.8;height3=61.6;
height=input('Enter a value for height');
volume=(height)
if height<=138
volume=(pi*height*radius1^2)
disp(volume)
elseif height<=219.5
volume=(pi*height1*radius1^2+pi*(138-height)*radius2^2)
disp(volume)
elseif height<=281.1
volume=(pi*height1*radius1^2+pi*(138-height)*radius2^2+pi*(219.5-height)*radius3^2)
disp(volume)
else height>281.1
disp(-1)
end
I run it through the checker and the code is still wrong when I run it through the grader. What might I be doing wrong in writing my code. I gave the height and radius in each stage above and I am using the volume formula for a cylinder.
1 Comment
Answers (1)
Youssef Khmou
on 28 Jul 2013
Steven, The error i can see is that the volume is negative, because you substract the height from 138 & 219.5 while its the reverse, try this version :
clear;
radius1=16.5; height1=138.0;
radius2=16.5; height2=81.5;
radius3=30.8; height3=61.6;
height=input('Enter a value for height:\n');
if height<=138
volume=(pi*height*radius1^2);
elseif (height>138) && (height<=219.5)
volume=(pi*height1*radius1^2+pi*(height-138.00)*radius2^2);
elseif (height>219.5)&&(height<=281.1)
volume=(pi*height1*radius1^2) + (pi*(height-138.00)*radius2^2) + ...
(pi*(height-219.5)*radius3^2);
elseif height>281.1
error(' Maximum height exceeded hmax=281.1');
end
fprintf(' Volume=%.2f m^3\n',volume);
1 Comment
dpb
on 28 Jul 2013
I'd preferred the hint version for HW problems instead of just doing it for the poster...but that's me.
See Also
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!