1 files changed, 19 insertions, 0 deletions

diff --git a/utils/invert.c b/utils/invert.c
new file mode 100644
index 0000000..3088273
--- /dev/null
+++ b/utils/invert.c
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <inttypes.h>
+#include <stdbool.h>
+
+#include "../src/cube.h"
+
+#define STRLENMAX 1000
+
+int main() {
+        char str[STRLENMAX];
+        cube_t cube;
+
+        fgets(str, STRLENMAX, stdin);
+        cube = readcube(H48, str);
+        writecube(H48, inverse(cube), str);
+        fputs(str, stdout);
+
+        return 0;
+}