diff --git a/HW1-wordcount/wordcount.c b/HW1-wordcount/wordcount.c
new file mode 100644
index 0000000..472a9bf
--- /dev/null
+++ b/HW1-wordcount/wordcount.c
@@ -0,0 +1,22 @@
+// vim: set ts=4 sw=4 et tw=80:
+
+#include <stdio.h>
+#include <ctype.h>
+#include <stdbool.h>
+
+int main() {
+    int c;
+    bool in_space = true;
+    unsigned int w = 0;
+    while ((c = getchar()) != EOF) {
+        if (isspace(c)) {
+            if (!in_space) {
+                w++;
+                in_space = true;
+            }
+        } else {
+            in_space = false;
+        }
+    }
+    printf("%u\n", w);
+}