#include<stdio.h>
#include<conio.h>
#include<math.h>
#define MAX 100

void nhap (int a[], int &n)
{
	do
	{
		printf("\nNhap so phan tu: ");
		scanf("%d", &n);
		if(n <= 0 || n > MAX)
		{
			printf("\nSo phan tu khong hop le. Xin kiem tra lai !");
		}
	}while(n <= 0 || n > MAX);
	for(int i = 0; i < n; i++)
	{
		printf("\nNhap a[%d]: ", i);
		scanf("%d", &a[i]);
	}
}

void xuat(int a[], int n)
{
	for(int i = 0; i < n; i++)
	{
		printf("%4d", a[i]);
	}
}

int TimChuSoDauLe( int n)
{
	int dv;
   while (n >= 10)   // vòng lặp kết thúc khi n < 10
   {
       dv = n % 10;
       n = n / 10;
   }
   if (n % 2 == 0)
       return 0;
   return 1;
}

int LietKeViTriChuSoDauLe(int a[], int n)
{
	for(int i = 0; i < n; i++)
	{
       if (TimChuSoDauLe(a[i]) == 1)
	   {
           printf("%4d", a[i]);
	   }
	}
   return 0;
}

int main()
{
	int n;
	int a[MAX];

	nhap(a, n);
	xuat(a, n);

	printf("\nCac so co chu so dau le la: ");
	LietKeViTriChuSoDauLe(a, n);
	
	getch();
	return 0;
}

Line 17: error: conio.h: No such file or directory
Line 6: error: expected ';', ',' or ')' before '&' token
In function 'xuat':
Line 26: error: 'for' loop initial declaration used outside C99 mode
In function 'LietKeViTriChuSoDauLe':
Line 47: error: 'for' loop initial declaration used outside C99 mode