added new File BasicMode.c for Basic calculations

src/main/c/BasicMode.c

@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include "taschenrechner.h"
+#include "main_taschenrechner.c"
+
+

src/main/c/main_taschenrechner.c

@@ -4,6 +4,7 @@
 #include <math.h>
 
 #include "taschenrechner.h"
+#include "BasicMode.c"
 
 
 doulbe add(doulbe a, doulbe b) {