Typing Tutor Program?

[pixtudio]

I have a problem making a typing tutor program in c.. im using djgpp and running on a windows xp.

my problem is that, how can i be able to let the letters/number fall at the same time.
example: the rand() function generated the letter a and is now falling on gotoxy(5,1).. now what i want is that while it is falling on (5,1) i want to have another fall at the same time on for example on gotoxy (12,1)..

how will i be able to do that? thanks a lot for those who would help. :)

here is my code.


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

main()
{
int nDiff;
int nY=0;
int nX=0;
int nLet;
int nCounter=0;
time_t seconds;

//width x=80 y =25
//intro page

clrscr();
gotoxy(32,10);
printf("TYPING TUTOR\n");
gotoxy(27,15);
printf("PRESS ENTER TO CONTINUE");
getch();

//difficulty menu

clrscr();
{
gotoxy(22,9);
printf("[1] - EASY (alphabet)\n");
gotoxy(22,11);
printf("[2] - AVERAGE (alphabet & numbers)\n");
gotoxy(22,13);
printf("[3] - DIFFICULT (all types of characters)\n") ;
gotoxy(19,20);
printf("Choose Difficulty: ");
}
scanf("%d", &nDiff);
clrscr();

if(nDiff==1)
{
gotoxy(1,5);
printf("--------------------------------------------------\n");
for(nCounter=1; nCounter<=2; nCounter++)
{
nX=srand(time(& seconds))%100;
while(nX>50)
{
nX=nX%25;
}


nLet=srand(time (&seconds))%100 ;
while(nLet<64|| nLet>89&&nLet<9 7||nLet>122)
{
nLet=nLet%10+65 ;
}

for(nY = 6; nY < 20; nY++)
{
if(nLet<64||nLe t>89)
{
gotoxy(nX,nY);
textcolor(10);
cprintf("%c", nLet);
gotoxy(60,50);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(60,50);
}
else if(nLet<97||nLe t>122)
{
gotoxy(nX,nY);
textcolor(14);
cprintf("%c", nLet);
gotoxy(1,20);
printf("--------------------------------------------------\n");
gotoxy(60,50);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(60,50);
}
}

}
getch();
return 0;
}

else if(nDiff==2)
{
gotoxy(1,5);
printf("--------------------------------------------------\n");
for(nCounter=1; nCounter<=2; nCounter++)
{
nX=srand(time(& seconds))%100;
while(nX>50)
{
nX=nX%25;
}


nLet=srand(time (&seconds))%100 ;
while(nLet<64|| nLet>89&&nLet<9 7||nLet>122&&nL et>=0||nLet<=9)
{
nLet=nLet%10+65 ;
}

for(nY = 6; nY < 20; nY++)
{
if(nLet<64||nLe t>89)
{
gotoxy(nX,nY);
textcolor(10);
cprintf("%c", nLet);
gotoxy(60,50);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(60,50);
}
else if(nLet<97||nLe t>122)
{
gotoxy(nX,nY);
textcolor(14);
cprintf("%c", nLet);
gotoxy(1,20);
printf("--------------------------------------------------\n");
gotoxy(60,50);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(60,50);
}
else if(nLet>=0||nLe t<=9)
{
gotoxy(nX,nY);
textcolor(11);
cprintf("%d", nLet);
gotoxy(1,20);
printf("--------------------------------------------------\n");
gotoxy(60,50);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(60,50);
}

}

}
getch();
return 0;
}

else if(nDiff==3)
{
gotoxy(1,5);
printf("--------------------------------------------------\n");
for(nCounter=1; nCounter<=2; nCounter++)
{
nX=srand(time(& seconds))%100;
while(nX>50)
{
nX=nX%25;
}


nLet=srand(time (&seconds))%100 ;
while(nLet<64|| nLet>89&&nLet<9 7||nLet>122)
{
nLet=nLet%10+65 ;
}

for(nY = 6; nY < 20; nY++)
{
if(nLet<64||nLe t>89)
{
gotoxy(nX,nY);
textcolor(10);
cprintf("%c", nLet);
gotoxy(800,30);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(800,30);
}
else if(nLet<97||nLe t>122)
{
gotoxy(nX,nY);
textcolor(14);
cprintf("%c", nLet);
gotoxy(1,20);
printf("--------------------------------------------------\n");
gotoxy(60,50);
sleep(1);
gotoxy(nX,nY);
printf(" ");
gotoxy(60,50);
}
}

}
getch();
return 0;
}
}