how to write if statements for a function in matlab

To write if statements for a function in Matlab, follow these steps:

1. Define your function with the function keyword.
2. Declare any input arguments within parentheses after the function name.
3. Use the if keyword followed by the condition in parentheses.
4. Use the end keyword to close the if statement.
5. Add your code to be executed if the condition is true within the if statement.
6. Use the else keyword followed by any code to be executed if the condition is false.
7. Close the else block with the end keyword.

Here's an example:

main.m
function output = myFunction(input)
    if input > 0
        output = input * 2;
    else
        output = input;
    end
end
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In this example, the function myFunction takes an input argument input and returns an output value output. If the input is greater than 0, the function multiplies it by 2 and assigns the result to the output. Otherwise, the function simply assigns the input to the output.