[GH-ISSUE #1813] Strange errors #1529

New issue

Open

opened 2026-02-28 01:30:25 +03:00 by kerem · 1 comment

kerem commented

2026-02-28 01:30:25 +03:00

Owner

Originally created by @sds5111 on GitHub (Apr 9, 2025).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1813

Can someone please tell me why the following code will not work? It is an issue with c++, not WiFiManager itself, but I can't find an answer anywhere.

1#include <Arduino.h>
2#include <FS.h> //this needs to be first, or it all crashes and burns...
3#include <WiFiManager.h>
4void setup()
5{
6WiFiManager wifimanager;
7WiFiManager wm;
8WiFiManager.resetSettings(); //reset settings
9if (!WiFiManager.autoConnect("AutoConnectAP", "password"))
10}
Line 8 which has a red squiglly line under the "," after WiFiManager. If I place the cursor over it,, the error is "expected an identifier"
Line 9 which has a red squiglly line under WiFiManager. If I place the cursor over it,, the error is "type name is not allowed",

This code used to work, now it doesn't. I don't know what I'm doing wrong, but would greatly appreciate some help.

Originally created by @sds5111 on GitHub (Apr 9, 2025). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/1813 Can someone please tell me why the following code will not work? It is an issue with c++, not WiFiManager itself, but I can't find an answer anywhere. 1#include <Arduino.h> 2#include <FS.h> //this needs to be first, or it all crashes and burns... 3#include <WiFiManager.h> 4void setup() 5{ 6WiFiManager wifimanager; 7WiFiManager wm; 8WiFiManager.resetSettings(); //reset settings 9if (!WiFiManager.autoConnect("AutoConnectAP", "password")) 10} Line 8 which has a red squiglly line under the "," after WiFiManager. If I place the cursor over it,, the error is "expected an identifier" Line 9 which has a red squiglly line under WiFiManager. If I place the cursor over it,, the error is "type name is not allowed", This code used to work, now it doesn't. I don't know what I'm doing wrong, but would greatly appreciate some help.

kerem commented

2026-02-28 01:30:26 +03:00

Author

Owner

@timr49 commented on GitHub (Apr 17, 2025):

The code has at least five problems:

It defines two instances of the class WiFiManager in lines 6 & 7. This is almost certainly not what you want.
The instances of WiFiManager are defined inside setup() which means they will cease to exist when setup() returns.
It uses a type name in line 8 where a variable name is expected (presumably it should be either wm or wifimanager).
Same as above in line 9.
There is no statement after the "if" in line 9, not even a semi-colon.

As you said, this is all about C++ and not about WiFiManager, so you might be better off finding an appropriate forum.

@timr49 commented on GitHub (Apr 17, 2025): The code has at least _five_ problems: 1. It defines _two_ instances of the class WiFiManager in lines 6 & 7. This is almost certainly _not_ what you want. 2. The instances of WiFiManager are defined inside setup() which means they will cease to exist when setup() returns. 3. It uses a type name in line 8 where a variable name is expected (presumably it should be either `wm` or `wifimanager`). 4. Same as above in line 9. 5. There is no statement after the "if" in line 9, not even a semi-colon. As you said, this is all about C++ and not about WiFiManager, so you might be better off finding an appropriate forum.