System.FormatException："索引(从零开始)必须大于或等于零且小于参数列表的大小

Question

namespace PersonalData
{
class Program
{
class User
{
public string[] name = new string[5];
public int[] age = new int[5];
}
static void Main(string[] args)
{
int i = 0;
User u = new User();
for (i = 0; i < 5; i++)
{
Console.WriteLine("Please enter your full name in all CAPS");
u.name[i] = Console.ReadLine();
Console.WriteLine("Please enter your age in numbers");
u.age[i] = Convert.ToInt32(Console.ReadLine());
}
int j = 0;
for (j = 0; j < 5; j++)
{
//System.FormatException: 'Index (zero based) must be greater than or equal to zero and less than the size of the argument list.'
Console.WriteLine("The names are {0}, {1}, {2}, {3}, {4}.", u.name[j]);  
}
Console.ReadLine();
}
}
}

Answer 1

您正在迭代u数组，但尝试在每次迭代时(错误地(打印所有数组。每次迭代只需打印一个元素：

for (j = 0; j < 5; j++)
{
Console.WriteLine("Name #{0:N} is {1}.", j, u.name[j]);  
}