refactoring: created printInvalidNumberMessage function

src/userinput.c

@@ -147,25 +147,7 @@ bool isNumberValid(long double value, long double *min, long double *max, long d
     return true;
 }
 
-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);
-        if (strlen(input) == 0) {
-            printText("Fehlende Eingabe!\n");
-            free(input);
-            continue;
-        }
-        char *endptr;
-        long double number = strtold(input, &endptr);
-        if (strlen(endptr) > 0) {
-            printText("Ungueltige Eingabe! Gib eine gueltige Zahl ein.\n");
-            free(input);
-            continue;
-        }
-        free(input);
-        if (isNumberValid(number, min, max, greaterThan, smallerThan, leftBorder, rightBorder)) {
-            return number;
-        }
+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(" >=");
@@ -192,6 +174,28 @@ long double getNumber(char *message, long double *min, long double *max, long do
         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);
+        if (strlen(input) == 0) {
+            printText("Fehlende Eingabe!\n");
+            free(input);
+            continue;
+        }
+        char *endptr;
+        long double number = strtold(input, &endptr);
+        if (strlen(endptr) > 0) {
+            printText("Ungueltige Eingabe! Gib eine gueltige Zahl ein.\n");
+            free(input);
+            continue;
+        }
+        free(input);
+        if (isNumberValid(number, min, max, greaterThan, smallerThan, leftBorder, rightBorder)) {
+            return number;
+        }
+        printInvalidNumberMessage(number, min, max, greaterThan, smallerThan, leftBorder, rightBorder);     
     }
 }