gsm shield AT command Stray '\' error

Projects Programming
1

i am getting stray error in the arduino uni compiler. Im trying to make call through gsm shield sim900a using AT Commands.
Error----> "Stray '' in program"
sms:3: error: stray '' in program
sms:3: error: stray '' in program
sms:13: error: stray '' in program
sms:13: error: stray '' in program
sms:15: error: stray '' in program
sms:15: error: stray '' in program
sms:19: error: stray '' in program
sms:19: error: stray '' in program
sms:23: error: stray '' in program
sms:23: error: stray '' in program
sms:3: error: 'u201d9443303461' was not declared in this scope
sms:3: error: expected ',' or ';' before 'u201d'
sms.ino: In function 'void setup()':
sms:13: error: 'u201cAT' was not declared in this scope
sms:15: error: 'u201cATD' was not declared in this scope
sms:19: error: 'u201c' was not declared in this scope
sms:19: error: 'u201d' was not declared in this scope
sms:19: error: expected `;' before ')' token
sms:23: error: 'u201cATH' was not declared in this scope

//Code for Dialling a number

char phone_no[]=”9443303461”;

void setup()

{

Serial.begin(9600);  //Open Serial Connection at baudrate 9600

delay(2000);

Serial.println(“AT”); // Wake up GSM

Serial.print(“ATD”); //Dial the phone number using ATD command

Serial.print(phone_no);

Serial.println(“;”); // Semicolon is a must at the end

delay(10000);

Serial.println(“ATH”); // After a delay of 5 secs Hang the call

}
2

Re-type all instances of double-quotes.

3

Thank you for the suggestion. I had a series of the stray '' errors and a : 'u201cButton' was not declared in this scope error after a copied some code from a PDF file. The problem was fixed after I replaced the double quote marks with single quote marks.

4

The problem was fixed after I replaced the double quote marks with single quote marks.

The problem was changed, not fixed. You need to replace the incorrect double quotes with correct double quotes to fix the problem.

5

Please accept this correction to my last post. Although single quote marks will sometimes compile without error, it causes perverse events on the serial port when executing. My experience was a continuous series of 25646 being sent to my laptop serial monitor. If you copy code from a PDF, delete the double quote marks and replace with keyboarded double quote as suggested above. The avrdude: stk500_ ... message will occur on compile about one tenth of the time when you push the reset.

6

dehenard:
The avrdude: stk500_ ... message will occur on compile about one tenth of the time when you push the reset.

That would be a completely different problem to the compilation errors you have reported previously.