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Link: http://codepad.org/n3iV5aBM    [ raw code | output | fork ]

C, pasted on Sep 16:
#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]);
	}
}
// nguyên tố => true
bool KiemTraNguyenTo(int n)
{
	if (n < 2)
	{
		return false;
	}
	else if (n > 2)
	{
		if (n % 2 == 0)
		{
			return false;
		}
		for (int i = 3; i <= sqrt((float)n); i += 2)
		{
			if (n % i == 0)
			{
				return false;
			}
		}
	}
	return true;
}

int TimSoNguyenToCuoi(int a[], int n)
{
	for(int i = n - 1; i >= 0; i--)
	{
		if(KiemTraNguyenTo(a[i]) == true)
		{
			return a[i];
		}
	}
	return -1;
}
int main()
{
	int n;
	int a[MAX];

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

	int nguyentocuoi = TimSoNguyenToCuoi(a, n);
	printf("\nSo nguyen to cuoi cung la %d", nguyentocuoi);

	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
t.c: At top level:
Line 32: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'KiemTraNguyenTo'
In function 'TimSoNguyenToCuoi':
Line 57: error: 'for' loop initial declaration used outside C99 mode
Line 59: error: 'true' undeclared (first use in this function)
Line 59: error: (Each undeclared identifier is reported only once
Line 59: error: for each function it appears in.)


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