inputname (MATLAB Function Reference)

Input argument name

inputname(argnum)

Description

This command can be used only inside the body of a function.

inputname(argnum)

returns the workspace variable name corresponding to the argument number argnum. If the input argument has no name (for example, if it is an expression instead of a variable), the inputname command returns the empty string ('').

Examples

Suppose the function myfun.m is defined as:

function c = myfun(a,b)
disp(sprintf('First calling variable is "%s".',inputname(1))

Then

x = 5; y = 3; myfun(x,y)

produces

First calling variable is "x".

But

myfun(pi+1,pi-1)

produces

First calling variable is "".