Console.WriteLine("please input one number");
            string s1 = Console.ReadLine();
            Console.WriteLine("please input two number");
            string s2 = Console.ReadLine();
            Console.WriteLine("{0}+{1}={2}", s1, s2, s1 + s2);

我是想表达两个数相加的和
但是如果我输入两个数
举个例子
5
4
显示为
5+4=54
应该等于9才对 怎么会这样呢。
求救啊！！！

感谢楼上的
  Console.WriteLine("please input one number");
            string s1 = Console.ReadLine();
            int i = Convert.ToInt32(s1);
            Console.WriteLine("please input two number");
            string s2 = Console.ReadLine();
            int i1 = Convert.ToInt32(s2);
            Console.WriteLine("{0}+{1}={2}", i,i1, i + i1);
我这样写就对啦 呵呵 不过这样写好麻烦啊！