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Return to Making Child Process.
<syntaxhighlight lang="C" name="banker_algorithm">
int main() { unsigned i, l = 0, j; int status; char name[100]; pid_t pid; pid = fork();//child starts if(pid == 0)//pid = 0 for child only { fgets(name, 100, stdin); printf("Thank you\n"); kill(getppid(), 9);//kills the parent return;// child finishes here } for(i = 0; i < 500000; i++) for(j = 0; j < 10000; j++) l++; // l is used so that compiler just won't remove the loop for optimization if(waitpid(pid, &status, WNOHANG) == 0)//Child still running { kill(pid, 9);// kills the child
if(! printf("Failed\n")) printf("l = %u",l);// for ensuring the code remains after optimization }
}
</syntaxhighlight>