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ASCII coding to get corresponding character

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Charlotte Reed
Charlotte Reed 2020-3-19
编辑： Adam Danz 2020-3-20
I wrote this code so far, and I am getting the corresponding characters, except I get them all from 32 through 126, no matter what number I type in. Essentially I want to be able to type in a number between 32:126 and get only that numbers character. I want it to be if the code is less than 32 or more than 126 (aka out of that range) the user gets a "?" as an answer. And then the code answers "Bye!" when the -1 is inputed, since it is used to quit. Could I have some help adjusting this code to do that. Thank you!
character=input ('Enter ASCII code(s) or -1 to quit', 's')
n=32:126; %ASCII codes
for i=1:length(n)
fprintf('%c=%3d\n',n(i),n(i));
if input<32
output=?
if input>126
output=?
if input=-1
output='Bye!'
end
end
end
end

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回答（1 个）

Adam Danz
Adam Danz 2020-3-19
编辑：Adam Danz 2020-3-19
You can use a switch/case or if/else as shown below.
input is a scalar, integer value (not to be confused with the input() function).
if input < 32 || input > 126
output = '?';
elseif input == -1
output = 'Bye!';
else
output = char(input);
end
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Adam Danz
Adam Danz 2020-3-20
编辑：Adam Danz 2020-3-20
@Charlotte Reed,
See my comment here that suggests to clear the input variable in addition to Walter's comment above.
Please take time to read and think about the code.

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