Initial

app/main.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <add/add.h>
+
+int main(int argc, char **argv) {
+    if (argc != 3) {
+        fprintf(stderr, "usage: %s <a> <b>\n", argv[0]);
+        return 1;
+    }
+
+    int a = atoi(argv[1]);
+    int b = atoi(argv[2]);
+
+    printf("%d\n", add(a, b));
+    return 0;
+}