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Link: http://codepad.org/YqvzObDc    [ raw code | output | fork ]

C, pasted on Oct 15:
#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 KiemTraNguyenTo(int x)   // => C không có true, false => nên dùng kiểu int
{
	if (x < 2)
	{
		return 0;
	}
	else if (x > 2)
	{
		if (x % 2 == 0)
		{
			return 0;
		}
		for (int i = 3; i <= sqrt((float)x); i += 2)
		{
			if (x % i == 0)
			{
				return 0;
			}
		}
	}
	return 1;
}

int KiemTraBiTrung(int a[], int n, int index)
{
	for (int i = index - 1; i >= 0; i--)
	{
		if (a[i] == a[index])
		{
			return 0; // Bị trùng
		}
	}
	return 1; // Không bị trùng
}

int DemSoLuongSoNguyenToPhanBiet(int a[], int n)
{
	int dem = 0;
	for(int i = 0; i < n; i++)
	{
		int CheckTrung = KiemTraBiTrung(a, n, i);
		{
			if (CheckTrung == 1)  // chỉ xử lý khi không trùng
			{
				if(KiemTraNguyenTo(a[i]) == 1)
				{
					dem++;
				}
			}
		}
	}
	return dem;
}
int main()
{
	int n;
	int a[MAX];

	printf("\nNhap mang a:");
	nhap(a, n);
	xuat(a, n);

	
	int dem = DemSoLuongSoNguyenToPhanBiet(a, n);
	printf("\nSo luong so nguyen to phan biet = %d", dem);

	getch();
	return 0;
}


Output:
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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 'KiemTraNguyenTo':
Line 43: error: 'for' loop initial declaration used outside C99 mode
In function 'KiemTraBiTrung':
Line 56: error: 'for' loop initial declaration used outside C99 mode
In function 'DemSoLuongSoNguyenToPhanBiet':
Line 69: error: 'for' loop initial declaration used outside C99 mode


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