shell - Calling an executable program using awk

Question

I have a program in C that I want to call by using awk in shell scripting. How can I do something like this?

Answer 1

From the AWK man page:

system(cmd)
              executes cmd and returns its exit status

The GNU AWK manual also has a section that, in part, describes the system function and provides an example:

system("date | mail -s 'awk run done' root")