#include <stdio.h>
#include <conio.h>

#define ROW 3
#define COL 4
void main()
{
	int a[ROW][COL];
	int i,j;
	int r_max,r_min;
   //輸入A矩陣
	printf("please enter the element of matrixA:%d*%d\n",ROW,COL);
	for (i = 0; i < ROW; i++)
	{
		for (j = 0; j < COL; j++)
		{
			scanf("%d",&a[i][j]);
		}
	}
	//輸出a矩陣
	printf("matri*b %d*%d :\n",ROW,COL);
	for (int i = 0; i < ROW; i++)
	{
		for (int j = 0; j < COL; j++)
		{
			printf("%8d",a[i][j]);
		}
		printf("\n");
	}
	r_max = a[0][0];
	r_min = a[0][0];

	for (i = 0; i < ROW; i++)
	{
		for (j = 0; j < COL; j++)
		{
			if (r_max < a[i][j])
			{
				r_max = a[i][j];
			}
			if (r_min > a[i][j])
			{
				r_min = a[i][j];
			}
		}
	}

	printf("the largest number of the matrix is %d\n",r_max);
	printf("the smallest number of the matrix is %d\n",r_min);

	getch();
}
 

執行結果