init commit

3sem/cnts/contest14/01.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <stdlib.h>
+#include <signal.h>
+
+volatile int cnt = 0;
+
+void
+f(int n)
+{
+    if (cnt == 5) {
+        exit(0);
+    }
+
+    printf("%d\n", cnt++);
+    fflush(stdout);
+
+    return;
+}
+
+int
+main(int argc, char *argv[])
+{
+    sigaction(SIGHUP, &(struct sigaction){.sa_handler = f, .sa_flags = SA_RESTART}, NULL);
+
+    printf("%d\n", getpid());
+    fflush(stdout);
+
+    for (;;) {
+        pause();
+    }
+
+    return 0;
+}