I think I have a coding error

actually the error says expected " ;" before " { "

( I had put the wrong bracket in on my original question)

Hello, remove the last semicolon from this cycle definition:

for{int j=1; j<=numRedBlink;j=j+1};

EDIT: One more thing: there is one more closing curly bracket than needed in the loop function.

PS: formatting the section as code much improves readability:

int redLED=8; //declaring redLED as an int and set in 8 position
int yellowLED=9;// declaring yellowLED as an int and set in postipn 9
int redOnTime = 500; //red LED is set to be on 500 milliseconds or a half second
int redOffTime= 500; //red LED is set to be off for 500 milliseconds or half a second
int yellowOnTime = 1000; //yellow is set to be on for 1000 milliseconds
int yellowOffTime = 500; //yellow LED is set to be off half a second
int numRedBlink=6; //j will be my counter in for loop
    
void setup() {
  pinMode { redLED, OUTPUT };
  pinMode { yellowLED, INPUT};
}
  
void loop() {
  for{int j=1; j<=numRedBlink;j=j+1};  { 
     digitalWrite{redLED, HIGH}; //turn red LED on
     delay {redOnTime}; //wait
     digitalWrite {redLED, LOW}; // turn red LED off
     delay {redOffTime}; //wait

     digitalWrite{yellowLED, HIGH}; //turn yellow LED on
     delay {yellowOnTime}; //wait
     digitalWrite{yellowLED,LOW}; //turn yellow LED off
     delay{yellowOffTime}; //wait
}

Thank you for your reply. Where does it need another curly bracket? I have tried the program with and without the semicolon

I added some comments with capital letters into the code snippet below:

void loop() {
  for{int j=1; j<=numRedBlink;j=j+1}  { 
digitalWrite{redLED, HIGH}; //turn red LED on
delay {redOnTime}; //wait
digitalWrite {redLED, LOW}; // turn red LED off
delay {redOffTime}; //wait
} // THIS IS REDUNDANT
digitalWrite{yellowLED, HIGH}; //turn yellow LED on
delay {yellowOnTime}; //wait
digitalWrite{yellowLED,LOW}; //turn yellow LED off
delay{yellowOffTime}; //wait
} // IS THIS STILL THE LOOP FUNCTION?

I found the problem. I was using curly brackets throughout and it does not like that.

oconnell this is the best way of learning.

Happy to see you found your error through trial and error.

You might have known the use of the type of brackets and semicolons,

But ever so now and then one does something totally obviously wrong.

Enjoy.

Yunus.

The first curvy ending bracket in the Void loop is for the "for loop" and only applies to the red LED. The last ending curvy bracket in the void loop is for the entire loop.