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Link: http://codepad.org/LIPaCq7s    [ raw code | output | fork ]

C, pasted on Sep 28:
#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("%8d", a[i]);
	}
}
/*

VD: 12 34 134
thì ta dc 1 mảng số:
Trị số : 0 1 2 3 4 5 6 7 8 9
Giá trị: 0 2 1 2 2 0 0 0 0 0

*/
void DemChuSo(int a[], int n, int b[])
{
	// Duyệt mảng a
	for (int i = 0; i < n; i++)
	{
		int themang = abs(a[i]);
		while (themang != 0)
		{
			int ChuSo = themang % 10;
			themang /= 10;

			b[ChuSo]++;
		}
	}
}
int TimChuSoXuatItNhat(int a[], int n, int b[])
{
    int ChuSoMin = abs(a[0] % 10);
    for (int i = 0; i < 10 ; i++)
    {
        if (b[i] != 0)
        {
            ChuSoMin = (b[ChuSoMin] < b[i]) ? ChuSoMin : i;
        }
    }
    return ChuSoMin;
 }


int main()
{
	int n;
	int a[MAX];

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

	int b[10] = {0};
	DemChuSo(a, n, b);
	for (int i = 0; i < 10; i++)
	{
		// Chỉ xét những chữ số có số lần xuất hiện > 0
		if (b[i] != 0)
		{
			printf("\nChu so %d xuat hien %d lan", i, b[i]);

		}
	}

	int ChuSoMin = TimChuSoXuatItNhat(a, n, b);
        printf ("\nChu so xuat hien it nhat la %d",ChuSoMin);

	getch();
	return 0;
}


Output:
1
2
3
4
5
6
7
8
9
10
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 'DemChuSo':
Line 42: error: 'for' loop initial declaration used outside C99 mode
In function 'TimChuSoXuatItNhat':
Line 57: error: 'for' loop initial declaration used outside C99 mode
In function 'main':
Line 78: error: 'for' loop initial declaration used outside C99 mode


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