Libraries and Linking With the f77 or f90 Command

To link the proper Fortran and C libraries, use the f77 or f90 command to invoke the linker.

Example 1: Use f77 to link:

demo% cc -c RetCmplxmain.c 
demo% f77 RetCmplx.f RetCmplxmain.o       
¨ This command line does the linking.
demo% a.out 
 4.0 4.5 
 8.0 9.0 
demo%