using System;

namespace Main {
    class Program {
        static void Main(string[] args) {
            int a = 12;
            int b = 21;

            Console.WriteLine("a: {0} || b: {1}", a, b);
            
            Console.WriteLine("a: {0} || b: {1}", a, b);
        }

        unsafe void Swap(int* a, int* b) {
            int temp;
            temp = *b;
            *b = *a;
            *a = *b;
        }
    }
}

using System;

namespace Main {
    class Program {
        static void Main(string[] args) {
            int a = 12;
            int b = 21;

            Console.WriteLine("a: {0} || b: {1}", a, b);
            
            Console.WriteLine("a: {0} || b: {1}", a, b);
        }

        unsafe void Swap(int* a, int* b) {
            int temp;
            temp = *b;
            *b = *a;
            *a = *b;
        }
    }
}