implemented getul

src/userinput.c

@@ -197,3 +197,9 @@ unsigned int getu(char *message, unsigned int *min, unsigned int *max) {
     LD(max)
     return getNumber(message, minld, maxld, NULL, NULL, 0, UINT_MAX);
 }
+
+unsigned long getul(char *message, unsigned long *min, unsigned long *max) {
+    LD(min)
+    LD(max)
+    return getNumber(message, minld, maxld, NULL, NULL, 0, ULONG_MAX);
+}