C code: display all solutions of 8-queen prob (BGI graphics)

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

int check(int,int,int,int);
void drawqueen(int,int);

void main() {

    int i,j,k,l,m,n,p,q,c=0;
    char s[50];
    int gd=DETECT,gm;
    initgraph(&gd,&gm,"c:\\tc\\bgi");

    for(i=0;i<8;++i) {
        for(j=0;j<8;++j) {
            if(!check(0,i,1,j)) continue;
            else
                for(k=0;k<8;++k) {
                    if(!check(0,i,2,k) || !check(1,j,2,k))continue;
                    else
                        for(l=0;l<8;++l) {
                            if(!check(0,i,3,l) || !check(1,j,3,l) || !check(2,k,3,l))continue;
                            else
                                for(m=0;m<8;++m) {
                                    if(!check(0,i,4,m) || !check(1,j,4,m) || !check(2,k,4,m) || !check(3,l,4,m))continue;
                                    else
                                        for(n=0;n<8;++n) {
                                            if(!check(0,i,5,n) || !check(1,j,5,n) || !check(2,k,5,n) || !check(3,l,5,n) || !check(4,m,5,n))continue;
                                            else
                                                for(p=0;p<8;++p) {
                                                    if(!check(0,i,6,p) || !check(1,j,6,p) || !check(2,k,6,p) || !check(3,l,6,p) || !check(4,m,6,p) || !check(5,n,6,p))continue;
                                                    else
                                                        for(q=0;q<8;++q) {
                                                            if(!check(0,i,7,q) || !check(1,j,7,q) || !check(2,k,7,q) || !check(3,l,7,q) || !check(4,m,7,q) || !check(5,n,7,q) || !check(6,p,7,q))continue;
                                                            if(check(0,i,7,q) && check(1,j,7,q) && check(2,k,7,q) && check(3,l,7,q) && check(4,m,7,q) && check(5,n,7,q) && check(6,p,7,q)) {
                                                                int hl,vl,kl=1;
                                                                sprintf(s,"Positions=%d %d %d %d %d %d %d %d",i,j,k,l,m,n,p,q);
                                                                outtextxy(10,10,s);
                                                                setcolor(15);
                                                                for(hl=100;hl<500;hl+=50)
                                                                    for(vl=50;vl<450;vl+=50)
                                                                        rectangle(hl,vl,hl+50,vl+50);
                                                                setfillstyle(SOLID_FILL,15);
                                                                for(hl=120;hl<500;hl+=100)
                                                                    for(vl=70;vl<450;vl+=100)
                                                                        floodfill(hl,vl,15);
                                                                for(hl=170;hl<500;hl+=100)
                                                                    for(vl=120;vl<450;vl+=100)
                                                                        floodfill(hl,vl,15);
                                                                setcolor(6);
                                                                setfillstyle(SOLID_FILL,6);
                                                                for(hl=120;hl<500;hl+=100)
                                                                    for(vl=120;vl<450;vl+=100)
                                                                        floodfill(hl,vl,15);
                                                                for(hl=170;hl<500;hl+=100)
                                                                    for(vl=70;vl<450;vl+=100)
                                                                        floodfill(hl,vl,15);
                                                                drawqueen(findpos(i),50);
                                                                drawqueen(findpos(j),100);
                                                                drawqueen(findpos(k),150);
                                                                drawqueen(findpos(l),200);
                                                                drawqueen(findpos(m),250);
                                                                drawqueen(findpos(n),300);
                                                                drawqueen(findpos(p),350);
                                                                drawqueen(findpos(q),400);
                                                                ++c;
                                                                getch();
                                                                getch();
                                                                cleardevice();
                                                            }
                                                        }
                                                    }
                                            }
                                    }
                            }
                    }
            }
    }
    getch();
    closegraph();
    gotoxy(getmaxx()/2,getmaxy()/2);
    printf("    No of solutions=%d",c);
    getch();
};

int check(int h1,int v1,int h2,int v2) {

    int i,k=v1,f=1;
    if(v1==v2)
        f=0;
    for(i=h1;i<h2;++i)
        ++k;
    if(v2==k)
        f=0;
    k=v1;
    for(i=h1;i<h2;++i)
        --k;
    if(v2==k)
        f=0;
    return(f);
}

void drawqueen(int x,int y) {

    setcolor(14);
    arc(x,y,270,360,25);
    arc(x+50,y,180,270,25);
    line(x+10,y+50,x+40,y+50);
    line(x,y+25,x+10,y+50);
    line(x+50,y+25,x+40,y+50);
    circle(x+25,y,4);
    setfillstyle(SOLID_FILL,14);
    floodfill(x+20,y+40,14);
    setcolor(4);
    circle(x+25,y,2);
    line(x+5,y+40,x+45,y+40);
}

int findpos(int i) {

    switch(i) {
        case 0:return(100);
        case 1:return(150);
        case 2:return(200);
        case 3:return(250);
        case 4:return(300);
        case 5:return(350);
        case 6:return(400);
        case 7:return(450);
    }
}