This is a straightforward C dialect program that will find 8 ruler in chess board with the majority of the states and you can decide the position of first ruler on the chess board.
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/***********By : FARSHAD MOJTABAI*********/
/***********With Graphic****************/
#include
#include
#include
#include
#include
#include
int place(int);
void queen(int);
void Board();
void Q(int,int);
void CounT(int,int,int);
int XYGraphic(int);
int x[9];
int main(void)
{
queen(8);
return 0;
}
void queen(int n)
{
int k= 1,z,X,Y,
counter=0,x2,y2,loc;
int extern x[9];
scorch answer;
int gdriver = DETECT, gmode, errorcode;
/* instate representation and nearby variables */
initgraph(&gdriver, &gmode, "c:\borlandc\bgi");
x[1] = 0;
printf("WHETHER YOU WANT TO CHOOSE A COORDINATE ORn");
printf("COMPUTER TAKES ALL POSSIBLE CASES :");
scanf("%c",&answer);
if(answer == "c" || answer == 'C')
{
printf("X,Y:");
scanf("%d%d",&x2,&y2);
}
clearviewport();
while(k > 0)
{
x[k]++ ;
while(x[k] <= n && !place(k))
x[k]++;
if(x[k] <= n)
{
if(k == n)
{
if(answer == "a" || answer == 'A')
{
Board();
counter++;
for(int m=1;m<9;m++)
{
z=x[m];
X = XYGraphic(m);
Y = XYGraphic(z);
Q(X,Y);
CounT(m,z,counter);
}
delay(3000);
}
else if(answer == "c" || answer == 'C')
{
for(int i=1;i<9;i++)
if(i==x2 && x[i]==y2)
loc = 1;
if(loc == 1)
{
Board();
counter++;
for(int m=1;m<9;m++)
{
z=x[m];
X = XYGraphic(m);
Y = XYGraphic(z);
Q(X,Y);
CounT(m,z,counter);
}
loc = 0;
delay(3000);
}
}
if(kbhit())
exit(0);
clearviewport();
}
else
{
k++;x[k]=0;}
}
else
k- - ;
}
}
int place(int l)
{
int i=1;
int extern x[9];
while(i < l)
{
if((x[i] == x[l]) || abs(x[i] - x[l]) == abs(i - l))
return(0);
i +=1;
}
return(1);
}
int XYGraphic(int p)
{
switch(p)
{
case 1: return 65;
case 2: return 115;
case 3: return 165;
case 4: return 215;
case 5: return 265;
case 6: return 315;
case 7: return 365;
case 8: return 415;
}
return 0;
}
void CounT(int x3,int y3,int c)
{
gotoxy(60,4);
printf("[%d]",c);
gotoxy(59,6+x3);
printf("(%c,%d)",96+x3,y3);
}
void Q(int x1,int y1)
{
for(int i=0;i<=15;i++)
{
setcolor(i);
circle(x1,y1,i);
}
}
void Board()
{
int m,n;
outtextxy(65,20,"a");
outtextxy(115,20,"b");
outtextxy(165,20,"c");
outtextxy(215,20,"d");
outtextxy(265,20,"e");
outtextxy(315,20,"f");
outtextxy(365,20,"g");
outtextxy(415,20,"h");
outtextxy(20,65,"1");
outtextxy(20,115,"2");
outtextxy(20,165,"3");
outtextxy(20,215,"4");
outtextxy(20,265,"5");
outtextxy(20,315,"6");
outtextxy(20,365,"7");
outtextxy(20,415,"8");
for(int j=0;j<8;j++)
for(int i=0; i<8;i++)
rectangle(50*i+40,50*j+40,50*(i+1)+40,50*(j+1)+40);
for(int l=0;l<8;l++)
{
if(l%2 == 0)
{m=0; n=0;}
else
{m=1; n=50;}
for(int k=0;k<4+m;k++)
{
setfillstyle(SOLID_FILL,getmaxcolor());
floodfill(100*k-n+41,50*l+41,getmaxcolor());
}
}
}
