Help us understand the problem. What is going on with this article?

c switch

More than 5 years have passed since last update.

C、Objective-Cではswitchの中で宣言を行う場合はcaseを波括弧で囲う必要あるようなので注意

Objective-C
- (IBAction)buttonAction:(UIButton*)sender{
    switch (sender.tag) {
        case BTN_WRITE:{
            NSData *data = [self str2data:[_txtField.text]];
            break;
        }
        case BTN_READ:{
            NSData* data = [self file2data:@"test.txt"];
            [_txtField setText:[self data2str:data]];
        }
        default:
            break;
    }
}
Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away