How do you set a variable name to a variable value?

If I make a variable ( a = 'name' ), I want to set the variable name with the value of a.

ex) ( name = )

[KSSV]

name = 3 ; 
name = 'John' ; 

That's it....why you want to assign again a ? This approach is not accepted.

[JIWON LEE]

I want to set variable name to 'John'

name = 'John'

value(name) = 3 --> John = 3;

[KSSV]

John = 3 ; 

This is enough right.

[Stephen23]

Before you force yourself into writing slow, inefficient, complex code that is difficult to debug, you should read this:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

Answer 1

[Dave B]

You can do this with eval, but you are likely to regret this.

a = 'Pi';
val = pi;
eval(a + " = " + val);

Pi = 3.1416

This link has some alternatives to using string evaluation to run code. It's a bad/dangerous style and there's almost always a better approach.

If you must name your variables with another variable, consider using fields of a struct rather than raw variables:

mydynvars=struct;
a = 'Pi';
b = 'e';
mydynvars.(a) = pi;
mydynvars.(b) = exp(1);

mydynvars

mydynvars = struct with fields:
    Pi: 3.1416
     e: 2.7183