How do you use IBAction methods already called as the condition in an if statement. XCODE

Question

i need help with this.

-(IBAction) equalsPressed:(id)sender{



if(((IBAction) dividePressed) = YES){
    int equals = labelsNumber.text.intValue;
    labelsNumber.text = @"";
    int ans = divide / equals;
    NSString *answer = [NSString stringWithFormat:@"%d", ans];
    labelsNumber.text = answer;

i am building a calculator and the error is "Expected Expression."

Please Help

What is `dividePressed`? Is that a method? An instance variable? — rmaddy, Feb 27 '13 at 01:45
In addition to the excellent answers below, I recommend [this SO thread](http://stackoverflow.com/q/1643007/620197) to get a better understanding of what an `IBAction` is. — Mike D, Feb 27 '13 at 01:52

score 1 · Answer 1 · answered Feb 27 '13 at 01:49

I assume you are trying to determine whether or not dividePressed has been called yet. You could do something like this:

BOOL dividePressed;

-(IBAction) dividePressed:(id)sender{
  dividePressed = YES;
}

-(IBAction) equalsPressed:(id)sender{
  if(dividePressed) {

  }
}

score 0 · Answer 2 · answered Feb 27 '13 at 01:49

I think you're doing it backwards. In the equalsPressed method you'd do the calculation. In the dividePressed you'd store the operator:

-(IBAction) equalPressed:(id)sender {
int equals = labelsNumber.text.intValue;
    int ans;
    labelsNumber.text = @"";
    switch(operator) {
    case DIVIDE:
    ans = op1 / op2;
    break;
    }
    NSString *answer = [NSString stringWithFormat:@"%d", ans];
    labelsNumber.text = answer;
}

-(IBAction) dividePressed:(id)sender {
  operator = DIVIDE;
}

I'd do the same thing with the operands (op1, op2), store them and operate on them in the equals method

How do you use IBAction methods already called as the condition in an if statement. XCODE

2 Answers2