Fix formatting and improve clarity in loop examples in programming book

main.typ

@@ -303,16 +303,17 @@ Jest jeszcze pętla `foreach`, która w róznych jezykach ma rózna składnię,
 ==== Przykład
 ```cs
 Console.WriteLine("Let's count to 10.");
-for (int i = 0; i < 10; i++;)
+for (int i = 0; i < 10; i++)
 {
     Console.WriteLine(i + 1);
 }
 
 bool shouldQuit = false;
-while (shouldQuit) {
+while (!shouldQuit)
-  Console.WriteLine("I will run until you type 'q'.")
+{
-  char response = Console.ReadLine();
+    Console.WriteLine("I will run until you type 'q'.");
-  if (response == 'q') {
+    string response = Console.ReadLine();
+    if (response == "q") {
         shouldQuit = true;
     }
 }
@@ -338,6 +339,36 @@ foreach (string product in shoppingList) {
 }
 ```
 ==== Rezultat
+Wynik działania powyższego kodu to:
+```
+Let's count to 10.
+1
+2
+3
+4
+5
+6
+7
+8
+9
+10
+I will run until you type 'q'.
+asdsd
+I will run until you type 'q'.
+cvcv
+I will run until you type 'q'.
+asas
+I will run until you type 'q'.
+q
+Please provide your PIN: 123
+Incorrect PIN. Try again
+Please provide your PIN: 1234
+Correct PIN! Access granted.
+Your shopping list:
+- bread
+- chicken
+- butter
+```
 ==== Wyjaśnienie
 ==== Ćwiczenia
 === Instrukcje skoku