public static void Main()
float num1 = 2.5f,num2 = 3.5f,total;
string str1 = "123",str2 = "856";
C_str1 = int.Parse(str1);
C_str2 = int.Parse(str2);
total2=(int)num1*(int)num2;
Console.WriteLine((int)total);
Console.WriteLine((float)total2);
Console.WriteLine(str1+str2);
Console.WriteLine(str1+num1);
Console.WriteLine(C_str1+C_str2);
Console.WriteLine(num1+"www");