Tests on calling (by reference, value) C programs from COBOL, and calling 
COBOL from COBOL, and calling COBOL from C.

To compile test program run r.sh or type make. 

The shell script will run make and create a trace files *.trace.txt.

To run type(example):
test15 or test15d test15e test15g
  
To clean type make clean.
