string numberString;
numberString=Console.ReadLine().Trim();//输入如:12,13,3;
char[] comma=",".ToCharArray();
string[] numberArray=numberString.Split(comma);
int[] numbers=new int[numberArray.Length];
for(int i=0;i<numberArray.Length;i++)
                  numbers[i]=Convert.ToInt32(numberArray[i]);
foreach (int num in numbers)
Console.Write(num.ToString()+" ");