#include<stdio.h>
#include<conio.h>
#include<math.h>
#define MAX 100
void NhapMang(int[], int);
void XuatMang(int[], int);
int DemSo(int[], int n);

void NhapMang(int a[], int n)
{
	for (int i = 0; i < n; i++)
	{
		printf("\Nhap vao a[%d] = ", i);
		scanf_s("%d", &a[i]);
	}
}
void XuatMang(int a[], int n)
{
	for (int i = 0; i < n; i++)
	{
		printf("%4d", a[i]);
	}
}
int DemSo(int a[], int n)
{
	int dem = 0;
	for (int i = 0; i < n; i++)
	{
		if (a[i] % 4 == 0 && a[i] % 5 != 0)
		{
			dem++;
		}
	}
	return dem;
}
int KiemTraNguyenTo( int n)
{
	
	
		if (n < 2)
		{
			return 0;
		}
		else if (n > 2)
		{
			if (n % 2 == 0)
			{
				return 0;
			}
		}
		for (int i = 3; i <= sqrt((double)n); i += 2)
		{
			if (n % i == 0)
			{
				return 0;
			}
		}
	
	return 1;
}
int TinhTongNguyenTo(int a[], int n)
{
	int Tong = 0;
	for (int i = 0; i < n; i++)
	{
		if (KiemTraNguyenTo(a[i]) == 1)
		{
			Tong += a[i];
		}
	}
	return Tong;
}
int main()
{
	int n;
	do
	{
		printf("\nNhap vao so phan tu cua mang ");
		scanf_s("%d", &n);

		if (n < 0 || n > MAX)
		{
			printf("\nPhan tu nhap vao khong hop le. Xin vui long kiem tra lai !");
		}
	} while (n < 0 || n > MAX);

	int a[MAX];
	NhapMang(a, n);
	XuatMang(a, n);


	// Câu a
	
	int dem = DemSo(a, n);
	printf("\nCo %d so chia het cho 4 nhung khong chia het cho 5 ",dem);

	int TongNguyenTo = TinhTongNguyenTo(a, n);
	printf("\nTong cac so nguyen to trong mang la %d", TongNguyenTo);

	_getch();
}

Line 17: error: conio.h: No such file or directory
In function 'NhapMang':
Line 11: error: 'for' loop initial declaration used outside C99 mode
Line 9: warning: unknown escape sequence '\N'
In function 'XuatMang':
Line 19: error: 'for' loop initial declaration used outside C99 mode
In function 'DemSo':
Line 27: error: 'for' loop initial declaration used outside C99 mode
In function 'KiemTraNguyenTo':
Line 51: error: 'for' loop initial declaration used outside C99 mode
In function 'TinhTongNguyenTo':
Line 64: error: 'for' loop initial declaration used outside C99 mode