Each instance of a backslash character (\) immediately followed by a new-line character is deleted, splicing physical source lines to form logical source lines.
Only the last backslash on any physical source line shall be eligible for being part of such a splice.

以下是引用wp231957在2015-12-7 16:16:43的发言：

我试了一下   关键字肯定不能断
 
 
int f(int s)
{
    if(s==0) return 1;
    int t=1;
    for(int i=1;i \
    <=s;i++ \
    ) t*=i;
    return t;
}