Q)example 1 IN UDF MANUAL 4.3.14
 

I followed this example.

when I tried to nmake, there showed up an error ..\..\src\rate.c<27>: error C2065:'rr_rate':undeclared identifier ..\..\src\rate.c<27>: error C2100:illegal indirection

so I rewrited rr_rate ----> rr_t but also an error... cannot open file "libudf.dll" nmake: fatal error U1077:'link':return code'0x450'

so I erased rr_t (or rr_rate) also I got an unsolvable problem by myself...-- could you tell me how I should treat this problem?