What would be the output of the below code snippet and why ?

var x = 0;

a();

function a() {

var x = 2;

b();

console.log(x);

}

function b() {

x++;

console.log(x);

}

Answer 1

[Swaroop Gopa Srinivas]

I assume that output of below Matlab code is required with reason.

x = 0;

a();

function a()

x = 2;

b();

disp(x);

end

function b()

x=2;

x = x+1;

disp(x);

end

(console.log(), var and ++ are not a valid Matlab commands)

>>MLAnswer

3

2

Reason:

x is a local variable and the scope of this variable is within the function only.

Among the display functions: disp(x) inside function b() is executed 1st, where the value of x is 3 (x=2; x=x+1). Then disp(x) inside function a() is executed, where the value of x is 2 (x=2)