Invalid expression please fix :(

%given data
a = 45; % Angle in degrees
P = 100; % Load in Newtons

h = 1.0; % Truss height in meters
 % Calculate horizontal and vertical components of the load
 P_horizontal = P * cosd(a);
P_vertical = P * sind(a);
% Calculate reactions at supports
 G_x = P_horizontal;
G_y = P_vertical;
 % Calculate forces in members
BC_y = G_y;
BC_x = 0;
CL_y = BC_y;
CK_y = 0;
CD_x = 0;
EF_x = 0;
 EF_y = 0;
KL_x = 0;
 KL_y = 0;
% Display results
fprintf('Forces in Members:\n');

Forces in Members:

fprintf('BC: %.2f N (compression)\n', BC_y);

BC: 70.71 N (compression)

 fprintf('CL: %.2f N (tension)\n', CL_y);

CL: 70.71 N (tension)

 fprintf('CK: Zero force member\n');

CK: Zero force member

fprintf('CD: %.2f N (tension)\n', CD_x);

CD: 0.00 N (tension)

fprintf('KL: Zero force member\n');

KL: Zero force member

fprintf('EF: Zero force member\n');

EF: Zero force member

[Torsten]

Works for me. Where do you get a problem ?

[habib]

can you give me a step by step from you opening the app to you running the code? would be greaty appreciated

[Image Analyst]

@habib If you have any more questions, then tell us what numbers you entered, and the entire error message (ALL THE RED TEXT, not just a snippet from it so we know what line threw the error) after you read this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer

[habib]

Line 26 :parse error at N : usage mgiht be invalid MATLAB syntax

[Dyuman Joshi]

As you can see, the code you have posted above runs without any error.

This means that the code you are running on your PC is different.

Post the whole code you are working with.

[habib]

that is whole code i just a mac does that make a difference? even thou im running a msac version?

[habib]

if possible can u post screenshots of what the code ran thank you

[Rik]

That is the beauty of Matlab: the operating system hardly ever matters.

The code you posted will run on any OS. Since the code you are trying to run doesn't, that means there is a difference. Please show the contents of the entire file you are trying to run. Without that, we will be running around in circles. As you can see in the question post itself: your code will run in R2023a. If you edit it and rerun, you can confirm it als runs in R2023b.

[Torsten]

@habib

The formating of the code you posted originally shows that you entered every line of your code in the command mode. Save the complete above code in an .m-file and run it from your MATLAB editor by pressing the green RUN arrow.

[Image Analyst]

Line 26 is

fprintf('CK: Zero force member\n');

I see no problem with that or even any mention of N. The entire code runs fine in r2023b (now available for download). Try retyping the line because maybe you have some funky unicode character in there (perhaps even invisible). Attach screenshots if it still doesn't work.

[habib]

ive tried it all still doesnt run, ive given up if you can send screenshots of code running that would be helpful

[Walter Roberson]

One of the moderators edited your post to format your code and run it here on MATLAB Answers. Because of that, your Question is now effectively a screen capture of the output of the code as if you had run it as a Livescript.

Answer 1

[Image Analyst]

"can send screenshots of code running that would be helpful".

It runs fine in r2023a and r2023b (see below). Now it's your turn to attach screenshots.