/*
  Example 2: testing for a service request (SRQ)
*/
#include <ieee-c.h>

main ()
{
    int status,l;
    char r[80];

    initialize (21,0);
    send (4,"MEASURE",&status);      /* start measurement */
    while (not(srq())) ;             /* wait for SRQ */
    enter (r,80,&l,4,&status);       /* read results */
}