摘要： 大小写处理 Upper & Lower case-(NSString *)uppercaseString -> Alter to upper all-(NSString *)lowercaseString -> Alter to lower all-(NSString *)capitaliz... 阅读全文

摘要： 字符串的导出，写到某个文件中去void stringExport(){NSString *str=@"123456";//if file not exist will not show error and it will create//if file folder not exist will s... 阅读全文

摘要： review ordinary pointervoid changeC(char *d){*d=9}char c=10;char *p=&c;changeC(&c);NSLog(@"%i",c);void changeStr(NSString *str2 ){str2=@"123";}main.mN... 阅读全文