NSString *str = @"OK";
NSString *str1 = @"OKK";
BOOL isResult = [str compare:str1];
NSLog(@"=========%d",isResult);
0相等,-1不相等
字符串相等用方法isEqualToString
NSString *str = @"OK";
NSString *str1 = @"OKK";
BOOL isResult = [str compare:str1];
NSLog(@"=========%d",isResult);
0相等,-1不相等
字符串相等用方法isEqualToString