DevOps, CI/CD and Automation

Hello.

I have a little experience working with Pro*C/C++ and now I am trying to learn more by my own.

I think this is an easy question. I am trying to precompile the Thread_example1.pc code from Pro*C/C++ Precompiler Programmer's Guide, Release 9.2 (I am trying it in a windows machine because I have pthreads for windows installed, so that I have commented the DCE_THREADS references).

The thing is I am not able to precompile the code (I have tried several precompiler options).

Now I am getting the error (I am sorry it is in Spanish):

Error semßntico en la lÝnea 126, columna 32, archivo d:\Ejercicios_ProC\MultithreadExample\Thread_example1.pc:
EXEC SQL CONTEXT ALLOCATE :ctx;
...............................1
PCC-S-02322, se ha encontrado un identificador no definido

The thing is that it is defined (outside a EXEC SQL DECLARE section but the precompiler CODE is set to default that does not need to be inside).

If I declare it inside a EXEC SQL DECLARE section I get:

Error semßntico en la lÝnea 105, columna 18, archivo d:\Ejercicios_ProC\MultithreadExample\Thread_example1.pc:
sql_context ctx[THREADS];
.................1
PCC-S-02322, se ha encontrado un identificador no definido

I have also tried writing EXEC SQL CONTEXT USE :ctx[THREADS]; just before the declare section but I get the same error than before.

Can someone help me?