ISO C++ forbids Comaprison

Projects Programming
1

I keep getting the following error. in the following code...

Arduino: 1.6.8 (Windows 10), Board: "Arduino/Genuino Uno"

sonar:87: error: ISO C++ forbids comparison between pointer and integer [-fpermissive]

     if( frontLeft < safeTurn && frontLeft != 0){

                      ^

exit status 1
ISO C++ forbids comparison between pointer and integer [-fpermissive]

I cant see why it thinks i am comparing a pointer and a integer , safeTurn is defined gloabaly. frontLeft is given value at the start of this function.

Anymore questions or it is unclear please ask thnaks for any help given in advance.

2

It seems that you forgot to post the code that generates the error. Is frontLeft or safeTurn an array?

3

I have found the problem by following the cascade of the problem back , to the main loop.

I had said in the main loop " check == true" Where as check was a function required "check () == true".

If anyone can explain why it thought the error was so randomly chosen in the code rather then the actual problem that would be great!

4

Reuyj:
I have found the problem by following the cascade of the problem back , to the main loop.

I had said in the main loop " check == true" Where as check was a function required "check () == true".

If anyone can explain why it thought the error was so randomly chosen in the code rather then the actual problem that would be great!

myFunction();  // is a function

if( myFunction == true) // myFunction degrades to a pointer to a function
5

If anyone can explain why it thought the error was so randomly chosen in the code rather then the actual problem that would be great!

Without seeing your code? Not a chance.