object-c中反斜杠换行写字符串

NSString *greeting = @"hello, object-c";
        NSString *greeting2 = @"hello,\
        object-c";
        NSString *greeting3 = @"hello," " object-c";
        NSLog(@"\n%@\n%@\n%@",greeting,greeting2,greeting3);
        //使用反斜杠换行写字符串的时候，输出会多出来一个制表符？输出结果如下
        //hello, object-c
        //hello,        object-c
        //hello, object-c

加反斜杠会输出多一段空白，不知为何

        int age = 021;
        //开头为0表示是八进制，021的值为17
        int weight = 0xaf8;
        //开头为0x表示是16进制，0xaf8的值为2808
        NSLog(@"age = %d",age);
        NSLog(@"weight = %d",weight);
        
        char tab = '\t';
        char newLine = '\n';
        NSLog(@"hello,%cmy%cfriend",tab,newLine);

八进制和16进制的表示方法，以及用char类型储存制表符和换行符

来源：CSDN

作者：camel_4197

链接：https://blog.csdn.net/camel_4197/article/details/104135892