init commit

3sem/cnts/contest14/t1.c

@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <signal.h>
+#include <stdlib.h>
+
+volatile int count = 0;
+
+void
+func(int sign)
+{
+    if (count < 5) {
+        printf("%d\n", count);
+        fflush(stdout);
+        count++;
+    } else {
+        exit(0);
+    }
+}
+
+int
+main(int argc, char *argv[])
+{
+    printf("%d\n", getpid());
+    fflush(stdout);
+
+    if (signal(SIGHUP, func) == SIG_ERR) {
+        exit(1);
+    }
+    for (;;) {
+        pause();
+    }
+
+    return 0;
+}