refactoring: created printInvalidNumberMessage function

src/userinput.c

@@ -147,6 +147,35 @@ bool isNumberValid(long double value, long double *min, long double *max, long d
     return true;
 }
 
+void printInvalidNumberMessage(long double value, long double *min, long double *max, long double *greaterThan, long double *smallerThan, long double leftBorder, long double rightBorder) {
+    printText("Ungueltige Eingabe! Fuer die eingegebene Zahl muss gelten:");
+    if (min != NULL) {
+        printText(" >=");
+        printlf(*min);
+    }
+    if (max != NULL) {
+        printText(" <=");
+        printlf(*max);
+    }
+    if (greaterThan != NULL) {
+        printText(" >");
+        printlf(*greaterThan);
+    }
+    if (smallerThan != NULL) {
+        printText(" <");
+        printlf(*smallerThan);
+    }
+    if (min == NULL && greaterThan == NULL) {
+        printText(" >=");
+        printlf(leftBorder);
+    }
+    if (max == NULL && smallerThan == NULL) {
+        printText(" <=");
+        printlf(rightBorder);
+    }
+    printText("\n");
+}
+
 long double getNumber(char *message, long double *min, long double *max, long double *greaterThan, long double *smallerThan, long double leftBorder, long double rightBorder) {
     while (true) {
         char *input = gets(message, NULL, NULL);
@@ -166,32 +195,7 @@ long double getNumber(char *message, long double *min, long double *max, long do
         if (isNumberValid(number, min, max, greaterThan, smallerThan, leftBorder, rightBorder)) {
             return number;
         }
-        printText("Ungueltige Eingabe! Fuer die eingegebene Zahl muss gelten:");
-        if (min != NULL) {
-            printText(" >=");
-            printlf(*min);
-        }
-        if (max != NULL) {
-            printText(" <=");
-            printlf(*max);
-        }
-        if (greaterThan != NULL) {
-            printText(" >");
-            printlf(*greaterThan);
-        }
-        if (smallerThan != NULL) {
-            printText(" <");
-            printlf(*smallerThan);
-        }
-        if (min == NULL && greaterThan == NULL) {
-            printText(" >=");
-            printlf(leftBorder);
-        }
-        if (max == NULL && smallerThan == NULL) {
-            printText(" <=");
-            printlf(rightBorder);
-        }
-        printText("\n");
+        printInvalidNumberMessage(number, min, max, greaterThan, smallerThan, leftBorder, rightBorder);     
     }
 }