#include <stdio.h>
#include <conio.h>
#include <stdlib.h>
#include <time.h>
#define out "output17.txt"

void Nhap(int *p, int m, int n)
{
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j < n; j++)
        {
            printf("\na[%d][%d]=", i, j);
            scanf("%d", &*(p + n * i + j));
        }
    }
}
void Xuat(int *p, int m, int n)
{
    printf("\nMang vua nhap la:\n");
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j < n; j++)
        {
            printf("%d\t", *(p + n * i + j));
        }
        printf("\n");
    }
}
void SapXep(int *p, int m, int n)
{
    FILE *f;
    f = fopen(out, "wt");
    for (int i = 0; i < m; i++)
    {
        for (int j = 0; j < n - 1; j++)
        {
            for (int k = j + 1; k < n; k++)
            {
                if (*(p+n*i+j)<*(p+n*i+k))
                {
                    int c =*(p+n*i+j);
                    *(p+n*i+j)=*(p+n*i+k);
                    *(p+n*i+k)=c;
                }
            }
        }
    }
    for (int x = 0; x < m; x++)
    {
        for (int y = 0; y < n; y++)
        {
            printf("%d\t", *(p + n * x + y));
            fprintf(f, "%d\t", *(p + n * x + y));
        }
        printf("\n");
        fprintf(f, "\n");
    }
    fclose(f);
}

void main()
{
    int m,n;
    printf("Nhap dong va cot: ");
    scanf("%d%d", &m, &n);
    int *p = (int *)calloc(m*n, sizeof(int));
    Nhap(p,m,n);
    Xuat(p,m,n);
    printf("Ma tran da sap xep la:\n");
    SapXep(p,m,n);
    getch();
}