HP C Programmer's Guide (92434-90009)

Chapter 3 57

Calling Other Languages

Comparing HP C and HP FORTRAN 77

chapter.

Passing string variables of any length must be done by: building and passing a

two-parameter descriptor (deﬁned in Note 3 above), initializing the string appropriately,

and by passing two arguments. The two arguments are the pointer to the characters and

the value of the length word. This is shown below:

char *chars = "Big Mitt";

int len;

…

len = strlen(chars);

pass_c_string (chars, len);

…

Linking HP FORTRAN 77 Routines on HP-UX

When calling HP FORTRAN 77 routines on an HP-UX system, you have to include the HP

FORTRAN 77 run-time libraries by adding the option:

-lcl

to the cc command line.

For details on linking external libraries, see the -l option of the cc(1) and ld(1)

commands in the HP-UX Reference manual.