diff --git a/src/conversionOfNumbers/main.c b/src/conversionOfNumbers/main.c
new file mode 100644
index 0000000..375e414
--- /dev/null
+++ b/src/conversionOfNumbers/main.c
@@ -0,0 +1,30 @@
+#include "conversionOfNumbers.h"
+#include "../userinput.h"
+#include <stdio.h>
+
+int main(){
+    int min = 0;
+    int max = 2;
+    int InputSys;
+    while(InputSys != 3){
+
+        printf("\nWaehle Zahlensystem:\n"
+                "\n<0> Binaer System\n"
+                "<1> Hexadezimal System\n"
+                "<2> Beenden\n");
+        InputSys = usergetd("\nEingabe: ", &min, &max);
+        if(InputSys == 2) break;
+        int InputProg;
+
+        while(InputProg != 3){
+
+            printf("\nZu oder von einer Dezimalzahl konvertieren?\n"
+                "\n<0> Zu\n"
+                "<1> Von\n"
+                "<2> Hauptmenue\n");
+                InputProg = usergetd("\nEingabe: ", &min, &max);
+                if(InputProg == 2) break;
+        }
+    }
+    return 0;
+}
\ No newline at end of file