1 files changed, 25 insertions, 0 deletions
diff --git a/miniclock.c b/miniclock.c
new file mode 100644
index 0000000..24e8a3f
--- /dev/null
+++ b/miniclock.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <time.h>
+
+int main() {
+    struct timespec ts = {0};
+    struct tm tm = {0};
+
+    for (;;) {
+        // print time
+        clock_gettime(CLOCK_REALTIME, &ts);
+        localtime_r(&ts.tv_sec, &tm);
+        printf("%s", asctime(&tm));
+        fflush(stdout);
+
+        // delay until next second
+        struct timespec td = {
+            .tv_sec = 0,
+            .tv_nsec = 1000000000 - ts.tv_nsec,
+        };
+
+        nanosleep(&td, NULL);
+    }
+
+    return 0;
+}