#include <iostream.h>
#include <conio.h>
#include <windows.h>
#define ESC 0x1b
#define TAB 0x09
int nums[3][3]={0}, opred=0;
void drawmatrix(int mx,int my)
{
system("cls");
HANDLE hnd = GetStdHandle(STD_OUTPUT_HANDLE);
COORD ps;
int i,j;
ps.X=0;
for(i=0;i<5;i++)
{
ps.Y=i;
SetConsoleCursorPosition(hnd,ps);
cout << "|" << flush;
}
ps.X=6;
for(i=0;i<5;i++)
{
ps.Y=i;
SetConsoleCursorPosition(hnd,ps);
cout << "|" << flush;
}
for(i=0;i<3;i++)
for(j=0;j<3;j++)
{
ps.X=i*2+1;
ps.Y=j*2;
SetConsoleCursorPosition(hnd,ps);
cout << nums[i][j] << flush;
}
ps.X=8; ps.Y=2;
SetConsoleCursorPosition(hnd,ps);
opred=nums[0][0]*(nums[1][1]*nums[2][2]-nums[1][2]*nums[2][1])
-nums[0][1]*(nums[0][1]*nums[2][2]-nums[0][2]*nums[2][1])
+nums[0][2]*(nums[0][1]*nums[1][2]-nums[0][2]*nums[1][1]);
cout << "= " << opred << flush;
//
ps.X=(mx-1)*2+1;
ps.Y=(my-1)*2;
SetConsoleCursorPosition(hnd,ps);
}
int main()
{
COORD pos;
char ch;
int x=1,y=1;
drawmatrix(x,y);
do
{
ch=getch();
if(ch==TAB)
{
if(x<3)
x++;
else if(y<3)
{
x=1; y++;
}
else
{
x=1; y=1;
}
}
if(ch>='0' && ch<='9')
{
nums[x-1][y-1]=(int)(ch-'0');
}
drawmatrix(x,y);
}while(ch!=ESC);
return 0;
} |
