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Matlab User-defined function problem

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  1. Apr 11, 2015 #1
    1. The problem statement, all variables and given/known data
    Write a user-defined function that calculates grade point average (GPA) on a scale of 0 to 4 ...
    https://41.media.tumblr.com/4f5e8ee38181d7c584c234138f632714/tumblr_nmnhq9p8jo1usetlso1_1280.png [Broken]

    3. The attempt at a solution
    tumblr_nmnhq9p8jo1usetlso2_1280.png

    I'm getting the error that "function definitions are not permitted in this context"
    And details says "A nested function cannot be defined in a control statement"

    I don't really understand how to use functions. What can I do to fix this?

    Oh and I took out that extra "end"
     
    Last edited by a moderator: May 7, 2017
  2. jcsd
  3. Apr 11, 2015 #2

    jedishrfu

    Staff: Mentor

  4. Apr 12, 2015 #3

    donpacino

    User Avatar
    Gold Member

    2 things.

    1. in matlab you need to make functions as separate m files. so you will have one file for your function, then one file where you use it.

    2. you generally don't want to write to an input to the function. you are redefining g as you use it. You might want to use an intermediate variable to write to

    try g_letter and g_number
     
  5. Apr 13, 2015 #4
    Thank y'all! I figured out how to make the function work, but not with the Letter-to-number conversion I was trying to use. It didn't like the size of g when it was made of stings. So I just wrote g with the numbers instead of letter grades. Good enough!

    https://41.media.tumblr.com/b768db26c487e07c370262dc345cb3e2/tumblr_nmrwnl6bpg1usetlso2_250.png [Broken]
    https://41.media.tumblr.com/ce387187354b1499a74fa028c76f50a4/tumblr_nmrwnl6bpg1usetlso1_1280.png [Broken]
     
    Last edited by a moderator: May 7, 2017
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