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#include "apue.h"
int globvar = 6; /* external variable in initialized data */
int
main(void)
{
int var; /* automatic variable on the stack */
pid_t pid;
var = 88;
printf("before vfork\n"); /* we don't flush stdio */
if ((pid = vfork()) < 0) {
err_sys("vfork error");
} else if (pid == 0) { /* child */
globvar++; /* modify parent's variables */
var++;
_exit(0); /* child terminates */
}
/* parent continues here */
printf("pid = %ld, glob = %d, var = %d\n", (long)getpid(), globvar,
var);
exit(0);
}