Nhập xuất mảng 2 chiều bằng file

// Nhap xuat mang bang file
// Khai bao cac ham thu vien neu co
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<stdlib.h>
#define SIZE 100
#define input "nhap.txt"
#define output "xuat.txt"
void nhap(int A[][SIZE], int &m, int &n);
void xuat(int A[SIZE][SIZE], int m, int n);
void main()
{
	int A[SIZE][SIZE],m,n;
	nhap(A,m,n);
	xuat(A,m,n);
}
// Ham nhap mang 2 chieu
void nhap(int A[][SIZE], int &m, int &n)
{
	FILE *fi;
	fi = fopen(input, "rt");

	if (fi == NULL)
	{
		printf("Khong tim thay file can doc!!!");
		exit(1);
	}

	fscanf(fi, "%d%d", &m, &n);
	for (int i = 0; i<m; i++)
		for (int j = 0; j<n; j++)
			fscanf(fi, "%d", &A[i][j]);

	fclose(fi);
}
// Ham xuat mang 2 chieu
void xuat(int A[SIZE][SIZE], int m, int n)
{
	FILE *fo;
	fo = fopen(output, "wt");
	if (fo == NULL)
	{
		printf("Khong ghi duoc file!!!");
		exit(1);
	}
	for (int i = 0; i<m; i++)
		for (int j = 0; j<n; j++)
			fprintf(fo, "%d ", A[i][j]);
	fclose(fo);
}
// bay gio chung ta vao noi chua code de tao file nhap.txt.
// nhan Ctrl + F7 bien dich chuong trinh