class Program
{
static void Main(string[] args)//类型转换 double int
{
int x = 3;
double y = x;//int转double 自动转换
Console.WriteLine(x);
int v = (int)y;//double y转int y 显示转换
Console.WriteLine(y);
//类型转换 string转int string转double
string s = "123789";
double d = Convert.ToDouble(s); //字符串转换123转换成double类型
Console.WriteLine(d);
int n = Convert.ToInt32(s);
Console.WriteLine(n);
string num = Console.ReadLine();
double num01 = Convert.ToDouble(num);
//上面两句等同于下面一句 简写模式
double num02 = Convert.ToDouble(Console.ReadLine());
Console.WriteLine(num01);
//类型转换 输入字符串转
int int cj = int.Parse(Console.ReadLine());//输入字符串转换为int类型
Console.WriteLine(cj);
double ccj = double.Parse(Console.ReadLine());
Console.WriteLine(ccj);
}
}
