这个宏定义有错吗？
#define WRITE_COL5 \
do.BeginWrite();\
do.RsCreate(5);\
int count = 0;\
while (ds > > eta1 > > eta2 > > eta3 > > eta4 > > eta5)\
{ \
count++; \
do.RsAddRow(); \
do.RsSetCol(1,eta1); \
do.RsSetCol(2,eta2); \
do.RsSetCol(3,eta3); \
do.RsSetCol(4,eta4); \
do.RsSetCol(5,eta5); \
do.RsSaveRow(); \
}\
if (count == 0) \
{ \
string message = "没有*** "; \
throw DTID(message); \
}
我在UNIX下编译竟然会报
Error 19: "***.cpp ", line 35 # Unexpected 'if '.
if (count == 0) \
^^
Error 24: "***.cpp ", line 35 # '( ' expected instead of '== '.
if (count == 0) \
^^
Error 20: "***.cpp ", line 36 # ') ' expected before '{ '.
{ \
^
Error 373: "***.cpp ", line 35 # Old-style function definition parameter must be a simple identifier.
if (count == 0) \
^
Error 43: "***.cpp ", line 35 # C++ does not allow Old-style (non-prototype) function definitions.
if (count == 0) \
^^^^^^^^^^^^^^
Warning (anachronism) 600: "***.cpp ", line 35 # Type specifier is omitted; "int " is no longer assumed.
if (count == 0) \
^^^^^
Warning 361: "***.cpp ", line 35 # Value-returning function might end without executing a return statement.
if (count == 0) \
^^^^^
Error 1044: "***.cpp ", line 1114 # Character '\ ' (value 92) was unexpected. Check if there are any characters or
white-space between '\ ' and newline.
WRITE_COL5
^^^^^^^^^^^^^^^^^
*** Error exit code 2
Stop.
*** Error exit code 1
我感觉这样定义宏应该是对的， 想来想去都不知道错在哪？？？
[解决办法]
宏就是个字符串替换，没什么对错之分。
关键还要看用的地方。
[解决办法]
你是不是每个 "\ "后面没有空格？？
如果“\”后面还有空格或者其他什么字符，好象就不会进行替换了。
[解决办法]
你的那个\后面有空格
