Return to Statement

Execute Operating System Function Example

The following GRIP and C program illustrate the writing of a program that receives arguments from a GRIP program and passes data back to the GRIP program. The result of this program is to print the message "'testing a long argument string into a GRIP xspawn program'" on the window Unigraphics was started from, and to print the message "back to GRIP" on the Unigraphics listing device.

   xspawn.grs
       string/arglst(127),retdat(127)
       arglst = 'testing a long argument string into a grip xspawn program'
       xspawn/prog,'test',arglst,result,retdat
       print/retdat
       halt
   
   test.c
   #include <stdio.h>
   #include <string.h>
   
   int uc4622(char *);
   
   int main(int argc, char *argv[])
   {
       char **argptr = argv + 1;
       char **endptr = argv + argc -1;
       char *str = "back to GRIP";
       int ier = 0;
   
       for(; argptr <= endptr; argptr++)
       printf("%s%c", *argptr, (argptr < endptr) ? ' ' : '\n');
       ier = uc4622(str);
       if(ier > 0)
       {
       printf("CFI error number is: %d", ier);
       }
       return 0;
   }