esql/c problem oon NT 4.0

Hi, I have a strange esql/c problem on windows NT 4.0. we have ODS 7.22 TE1 , esql/c 7.20.TE1 and VC++ 5.0 I installed both the products as administrator on my local machine. when I try to compile one of the esql demo programs at the command line: C:\\Informix\\demo\\cwindemo>esql -o decadd decadd.ec I get the following error messages: decadd.c decadd.ec(20) : error C2065: 'dec_t' : undeclared identifier decadd.ec(20) : error C2146: syntax error : missing ';' before identifier 'num1' decadd.ec(20) : error C2065: 'num1' : undeclared identifier decadd.ec(20) : error C2065: 'num2' : undeclared identifier decadd.ec(20) : error C2065: 'sum' : undeclared identifier INFORMIX-ESQL Version 7.20.TE1 esql: error -55904: Error in spawned program. Any ideas why the VC++ compiler is unable to not identify the esql include files. Note: dec_t is a variable defined in esql header decimal.h Also a very strange thing happens. If I compile this program using their frontend tool cwindemo, the program works fine. Thanks in advance. I really appreciate some feedback. Anitha.