Why does echo not echo variables

Question

@echo off

set a[0] = 1
echo %a[0]%

When I try to run this, all I get is: "ECHO is off" and not a[0]. When I try to run it with echo on, all it returns is that echo is on. What do I need to change so that it only echoes the value of a[0]?

Answer 1

Remove the white spaces around the assignment.

Instead of ,

set a[0] = 1

Use

set a[0]=1

---

The script would look like .,

@echo off

set a[0]=1
echo %a[0]%