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Nguyễn Huỳnh Minh Đức _23DH110814 Bài 1
namespace _23Dh110814_NguyenHuynhMinhDuc { internal class Program {
static void Main(string[] args) {
Console.Write("Hay nhap n: ");
int n = int.Parse(Console.ReadLine());
for (int i = 0; i < n; i++) { if (i % 2 != 0) { Console.Write(i + " "); } } Console.WriteLine(); } } } Bài 2: namespace ConsoleApp1 { internal class Program {
static void Main(string[] args) { Console.Write("nhap n: ");
int n = int.Parse(Console.ReadLine()); int sum = 0; int sodu = 0; while (n > 0) { sodu = n % 10; n = n / 10; if ( sodu % 2 == 0) { sum += sodu; } } Console.WriteLine(sum); } } } Bài 4 namespace ConsoleApp1 { internal class Program {
static void Main(string[] args) { Console.Write("nhap n: ");
string n = Console.ReadLine(); soChan(n); } static void soChan(string n) { int count = 0;
for (int i = 0; i < n.Length; i++) { if (n[i] % 2 == 0) count++; } if (count == n.Length) {
Console.WriteLine($" cac chu so {n} la so chan"); } else
Console.WriteLine($" cac chu so {n}khong la so chan "); } } }