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Link: http://codepad.org/gvdTIE1Z    [ raw code | output | fork ]

C, pasted on Apr 19:
#include<stdio.h>
#include<conio.h>

long tinhXn(int);
long tinhYn(int);

long tinhXn(int n)
{
	if(n == 0)
		return 1;
	return tinhXn(n - 1) + tinhYn(n - 1);
}

long tinhYn(int n)
{
	if(n == 0)
		return 0;
	return 3*tinhXn(n - 1) + 2*tinhYn(n - 1);
}
int main()
{
	int n;
	printf("\nNhap n "); scanf("%d", &n);

	long kq1 = tinhXn(n);
	long kq2 = tinhYn(n);

	printf("\nX(n) = %d, Y(n) = %d", kq1, kq2);

	getch();
	return 0;
}


Output:
1
Line 17: error: conio.h: No such file or directory


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