1 files changed, 20 insertions, 0 deletions
diff --git a/src/graph.h b/src/graph.h
new file mode 100644
index 0000000..3443c8f
--- /dev/null
+++ b/src/graph.h
@@ -0,0 +1,20 @@
+#ifndef GRAPH_H_
+#define GRAPH_H_
+
+#include <stddef.h>
+
+struct vertex {
+	size_t number;
+	struct vertex *next;
+};
+
+struct vertexList {
+	struct vertex *first;
+	struct vertex *last;
+};
+
+struct vertexList *vertexAlloc(size_t length);
+void vertexAdd(struct vertexList *v, size_t toWhich, size_t whichOne);
+
+#endif
+