CODEWITHSUNDEEP
objective-cxcodecompiler-errors
Simon
Simon

Reputation: 142

Incompatible types in initialization error

I've been on this for hours and can't find a solution. When I try to compile the following I get the "Incompatible types in initialization" error on the marked lines. Any help is accepted.

Here's my Controller.m file:

#import "Controller.h"
#import "Transactions.h"

@implementation Controller
- (IBAction)add:(id)sender {
    double x = [addF doubleValue];
    double bal = [balanceF doubleValue];
    double newBal = [trans add:x to:bal]; //Error marked here
    [balanceF setDoubleValue:newBal];
}

- (IBAction)sub:(id)sender {
    double x = [subF doubleValue];
    double bal = [balanceF doubleValue];
    double newBal = [trans sub:x from:bal]; //Error marked here
    [balanceF setDoubleValue:newBal];
}
@end

And here's my Transactions.m file:

#import "Transactions.h"

@implementation trans

-(double) add:(double)x to:(double)bal{
    return (x + bal);
}

-(double) sub:(double)x from:(double)bal{
    return (bal - x);
}

@end

Please tell me if you need anything else. Thanks!

Upvotes: 1

Views: 216

Answers (1)

MByD
MByD

Reputation: 137272

'trans' is a class, so if you declare / call method using the class, and not an instance of it, they should be declared with +:

+(double) add:(double)x to:(double)bal{

+(double) sub:(double)x from:(double)bal{

Don't forget to change in the header file as well...

Upvotes: 1

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