有两种方式在多行分割字符串：

There are two ways to split strings over multiple lines:

在C所有线可以被分成使用\\多行

All lines in C can be split into multiple lines using \.

普通C：

char *my_string = "Line 1 \
                   Line 2";

目标-C：

NSString *my_string = @"Line1 \
                        Line2";

更好的方法

有一个更好的办法，只是为字符串工作。

Better approach

There's a better approach that works just for strings.

普通C：

char *my_string = "Line 1 "
                  "Line 2";

目标-C：

NSString *my_string = @"Line1 "
                       "Line2";    // the second @ is optional

第二种方法比较好，因为没有包括很多的空白。然而，对于一个SQL查询，这两个都是可能的。

The second approach is better, because there isn't a lot of whitespace included. For a SQL query however, both are possible.

请注意：用#define，你必须添加一个额外的\\来连接两个字符串：

NOTE: With a #define, you have to add an extra '\' to concatenate the two strings:

普通C：

#define kMyString "Line 1"\
                  "Line 2"