refactoring: changed print and maxInput

src/fakultaet/main.c

@@ -5,9 +5,9 @@
 int main() {
 	// minInput is set to 0 so there won't be any negative numbers
 	int minInput = 0;
+	int maxInput = 12;
 
-	printf("Enter a number to calculate its factorial: \n");
-	int number = usergetd("Enter an even number: "), minInput, NULL);
+	int number = usergetd("Enter a positive number below 13: "), minInput, maxInput);
 
 	int result = fakultaet(number);
 	// result now has the factorial of the user input