#include <sys/types.h>
#include <sys/ipc.h>
key_t ftok(const char *pathname, int proj_id);
#include <stdio.h>
#include <sys/types.h>
#include <sys/ipc.h>
int main ()
{
int i;
for (i = 1; i <= 5; i++) {
printf ("key[%d] = %ul \n", ftok(".", i));
}
return 0;
}
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