In here I can't use foreach
:
`Error CS0030 Cannot convert type 'ConsoleApplication5._3.Struct.Sach' to 'int'
How can I fix it?
public struct Sach
{
public string TenSach;
public string TacGia;
public string GioiThieu;
public int ID;
public void nhapdulieu(string q,string w, string e, int r)
{
TenSach = q;
TacGia = w;
GioiThieu = e;
ID = r;
}
public void Insach()
{
Console.Write($"Ten sach: {TenSach}\n");
Console.Write($"Tac gia: {TacGia}\n");
Console.Write($"Gioi thieu: {GioiThieu}\n");
Console.Write($"Ma sach: {ID}\n");
}
};
public class QuanLySach
{
public static void NhapSach()
{
Sach[] sach1 = new Sach[4];
for(int i=0;i<4;i++)
{
Console.WriteLine("nhap ten sach, tac gia, gioi thieu, id:");
sach1[i].TenSach = Console.ReadLine();
sach1[i].TacGia = Console.ReadLine();
sach1[i].GioiThieu = Console.ReadLine();
var vv = Console.ReadLine();
Int32.TryParse(vv, out sach1[i].ID);
}
foreach(int bb in sach1)
{
// in here i cant use foreach but i dont know why?
}
Console.ReadLine();
}
}
}
You are using foreach
incorrectly. Foreach loop will iterate trough sequence and your bb
should be same type as base type for that sequence. In your case it should be:
foreach(Sach bb in sach1)
{
// in here i cant use foreach but i dont know why?
}
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