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I am currently learning pointers. I am following a book (Says Teach Yourself "Arduino Programming") in which there is an exemple about pointer and array.

void setup() {
 // put your setup code here, to run once:
 Serial.begin(9600);
 char string1[] = "This is my test string";
 char string2[]="This is another string test";
 char *ptr2 = string2;
 char *ptr1 = string1;
 while (*ptr1 != '0円') { // not "0円"
 *prt2 = *prt1;
 ptr1++;
 prt2++;
 }
 Serial.println(string1);
 Serial.println(string2);
}
void loop() {
 // put your main code here, to run repeatedly:
}

I get an error "ptr2 was not declare in this scope."

I don't know what is wrong...

That for your help.

asked Nov 22, 2017 at 14:33
1
  • Are you sure the error says ptr2 and not prt2? Commented Nov 22, 2017 at 14:40

1 Answer 1

1

"ptr2" != "prt2"

You have a typo there.

answered Nov 22, 2017 at 14:35
3
  • the classical ptr vs prt, cmd vs cnd, cnt vs cmt, cmt vs cmd and so on... :) Commented Nov 22, 2017 at 14:37
  • It's teh typical typo :) Commented Nov 22, 2017 at 14:38
  • haaa.... Thanks. I have spent 4 days in a row learning Arduino.... I must be tired. thanks again and sorry for such stupid question. it is working just fine now :-) Commented Nov 22, 2017 at 14:39

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