格式化字符串

 

 

 

// {N,M:A} N是索引 M是宽度 A是预定义类型 N和M逗号分隔 , M 和 A用冒号分隔
int a = 900;
int b = 1055;
Console.WriteLine(" {0,4:C2}\n+{1,4:C2}\n ------------\n{2,4:C2}", a, b, a + b);

　　

 

 

 

 

 

 

 

decimal c = 0.22m;
Console.WriteLine("{0:#.00}",c);

decimal d = 2.22m;
Console.WriteLine("{0:#.00}", d);