public static void Main()
Console.WriteLine("......");
Console.WriteLine("Alegeti optiunea : ");
Console.WriteLine("1.Suma");
Console.WriteLine("2.Scadera");
Console.WriteLine("3.Imultirea");
Console.WriteLine("4.Inpartirea");
Console.WriteLine("Alegerea este : ");
int alegere = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("Eror imput");
Console.WriteLine("............");
static void suma(int a,int b){
Console.WriteLine("Intr valoarea a = ");
a =Convert.ToInt32(Console.ReadLine());
Console.Write("Intr valoarea b = ");
b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("a + b +"+(a+b));
static void substraction(int a,int b){
Console.WriteLine("Intr valoarea a = ");
a =Convert.ToInt32(Console.ReadLine());
Console.Write("Intr valoarea b = ");
b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("a - b ="+(a-b));
static void multiplication(int a,int b){
Console.WriteLine("Intr valoarea a = ");
a =Convert.ToInt32(Console.ReadLine());
Console.Write("Intr valoarea b = ");
b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("a*b ="+(a*b));
static void division(int a,int b){
Console.WriteLine("Intr valoarea a = ");
a =Convert.ToInt32(Console.ReadLine());
Console.Write("Intr valoarea b = ");
b = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("a / b ="+a/b);