Getting a Symbolic Variable from the user using input

2018 10 19
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How to get a Symbolic variable as an input from the user? for example when the input prompt comes up if the user inputs nothing or a '?' sign, a symbolic variable automatically gets created. I tried using the code below and then entering something like "syms u" to create the variable but it gives this error: Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parentheses.
Fx=input('Horizental Force on Node');

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madhan ravi
madhan ravi 2018-10-19
编辑：madhan ravi 2018-10-19

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"How to get a Symbolic variable as an input from the user?"
prompt = 'Horizontal force on node: ';
str = input(prompt,'s');

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madhan ravi
madhan ravi 2018-10-19
The above will do the work you need.
Morteza Ghafoori
Morteza Ghafoori 2018-10-19
With this, an empty symbolic variable will be created if the user inputs nothing and that totally suits me. Thanks

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