syntax error in if else if block

how to write else if condition with multiple inputs

else if condition is throwing an error.

[Infinite_king]

Can you share the exact error message ?

Answer 1

[Hassaan]

% Number of inputs: 3
% If expression (e.g., u1 ~= 0): 
u1 == 1
% Elseif expressions (comma-separated list, e.g., u2 == 2, u3 == 3):
(u2 == 2) && (u3 == 3)
% Show else condition:

Ensure that each condition within the Elseif expressions field is properly formatted using logical operators like && (AND) or || (OR).

Separate multiple elseif expressions with commas, if there are more than one.

Here’s the corrected entry based on your input:

If expression:

u1 == 1

Elseif expressions:

(u2 == 2) && (u3 == 3)

Ensure there are no extra spaces or unbalanced parentheses.

Double-check variable names and ensure they match the input names used in your Simulink model.

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[Maya]

tried the same but still same error.

Answer 2

[Aman]

Hi Maya,

You are getting this error because the square brackets and '&&' are not allowd in IF block. The allowed opertators are <, <=, ==, ~=, >, >=, &, |, ~, ( ), unary-minus. So the modified equation as per this would be as below.

(u2==2) & (u3==3)

I hope this helps!

[Maya]

Hello Aman,

I want the logical AND to perform. "&" will give other result.

[Torsten]

I think you must delete all spaces in the second condition:

u2==0&u3==2