why does this code return that my variable A is undefined when i run it? how can i change this?

function f=MSP_Asgn4_Q1_27012653(D,n,X)
if X==A
    P=D*(1+(1.5/100)).^n;
end

[Stephen23]

"why does this code return that my variable A is undefined when i run it?"_

Becaues you did not define A anywhere. Where is A defined? Nowhere.

"how can i change this?"

Define A before using it.

Answer 1

[madhan ravi]

because you didn't define A

A=somevalue
if X==A