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I am trying to design a random timer which a ball gets destroyed and re-created base on a random time frame so I attached a picture for you to see for my code. please let me know whats wrong here.

That error is caused by your use of fire in the 5th line. For that error to happen, fire cannot be a variable. If you make it one, then it should work. Also, do you know how to use a switch statement? The image quality is poor, so I can't see exactly what you were doing, but your bracket placement within the case 0 seems weird. Also, you'll never get decision to equal 0 with that code. You need to drop the +1 for that to work.

You also have a redundant case in your switch statement.

You are adding 1 to the randomly generated decision.
Therefore there will never be a case 0

Do you have brackets in between your switch cases like this?

Code: Select all

switch(decision)
{
       case 0: {fire=1}
       {
        yvelocity =5;
       }
       break;
}


If so, you don't need those brackets. Do it like this.

Code: Select all

switch(decision)
{  // <--- only one pair of brackets needed. That's the beauty of switch!

     case 0:

     fire=1;
     yvelocity=5;

     break;
     

     // now you're ready for the next case!
    case 1:// <<< notice a colon goes here

    // put whatever you need to happen when decision == 1 here.

    break; // <<< and a semicolon goes here

} // << last bracket.