checking that a user input is an integer
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The user is told to input an integer between 1 and 59 but I want an error message to display if the value they enter is not an integer. This is what I have so far:
prompt = {'Enter your first integer between 1 and 59'};
dlg_title = 'User inputs';
num_lines = 1;
answer = inputdlg(prompt,dlg_title,num_lines);
u=str2double(answer{1});
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Star Strider
2018-2-19
1 个投票
There are several ways of testing to see if the returned value is an integer.
You want to see if there is any non-zero value to the right of the decimal, so test for that. You can also experiment with the rem or mod functions.
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Roger Stafford
2018-2-19
Test whether this is true. If so, 'prompt' is an integer, otherwise it is not.
prompt==round(prompt)
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