error strat 324 in program please help

Hello!!
im very new to arduino and need to control a stepper motor for a project.The system is a nema17 motor,L298N control board,a genuine UNO and push buttons for clockwise and anticlockwise.
i found in this page the following program and fits perfect to my needs Stepper Motor control with L298 & Arduino | alselectro
but when i copy and paste the program to upload it after press the upload button i get the stray 342 error.
here is all the error

Arduino: 1.8.5 (Windows Store 1.8.10.0) (Windows 10), Πλακέτα:"Arduino/Genuino Uno"

sketch_feb09a:35: error: stray '\342' in program

Serial.println(β€?Speed of motor is β€?);

^

sketch_feb09a:35: error: stray '\200' in program

sketch_feb09a:35: error: stray '\234' in program

sketch_feb09a:35: error: stray '\342' in program

sketch_feb09a:35: error: stray '\200' in program

sketch_feb09a:35: error: stray '\234' in program

C:\Users\User\Desktop\test_single_motor_2_buttons\sketch_feb09a\sketch_feb09a.ino: In function 'void loop()':

sketch_feb09a:35: error: expected ')' before 'of'

Serial.println(β€?Speed of motor is β€?);

^

exit status 1
stray '\342' in program

Please help me!!!!!!I am new and i completely lost?what im making wrong???
Thank you
George

george79:
Please help me!!!!!!I am new and i completely lost?what im making wrong???
Thank you
George

I guess you didn't try the search feature on this forum or google...

this has been asked and answered maybe hundreds of times...

You have non-ASCII characters in your code, these are not supported and must be removed. These are often non-printing characters that get pulled in when copying from websites - but in your case, it looks like they are the stylized quotes that some programs (like microsoft office suite) replaces quotation marks with to make them look prettier (and which are notorious for causing problems when pasted into other programs).

For example, in that line, it shows:

Serial.println(β€?Speed of motor is β€?);

That should be

Serial.println("Speed of motor is ");

You must go through your sketch and find and remove all non-ascii characters, and in the case of mangled quotes, replace them with normal quotes.

The quotation marks in Serial.println(“Speed of motor is “); seems to be the only problem.
Sketch compiles after changing the line to:

Serial.println("Speed of motor is ");

Leo..

its working!!!!!!!
Thanks for the fast answers!!!
thanks again!!