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Link: http://codepad.org/z2KYLqJO    [ raw code | output | fork ]

C, pasted on Oct 5:
#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]);
	}
}

/*
1234
1234 / 10 = 123 -> bỏ đi hàng đơn vị
123 % 10 = 3  -> lấy chữ số hàng chục
*/
int TimSoHangChuc5(int n)
{
	n = abs(n);
	n = n / 10;
	int hangchuc = n % 10;
	if(hangchuc == 5)
	{
		return 1;
	}
	return 0;
}

int TinhTongSoHangChuc5(int a[], int n)
{
	int Tong = 0;
	for(int i = 0; i < n; i++)
	{
		if(TimSoHangChuc5(a[i]) == 1)
		{
			Tong += a[i];
		}
	}
	return Tong;
}
int main()
{
	int n;
	int a[MAX];

	nhap(a, n);
	xuat(a, n);
	int TongChuc5 = TinhTongSoHangChuc5(a, n);
	printf("\nTong cac phan tu co chu so hang chuc la 5: %d", TongChuc5);

	getch();
	return 0;
}


Output:
1
2
3
4
5
6
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 'TinhTongSoHangChuc5':
Line 52: error: 'for' loop initial declaration used outside C99 mode


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