OK i might be able to help you with this , but don't read this if you can't make your own modified code.plus this will help you to get started
int mainmenu()
{
int sel=0,exit=0;
while(exit==0){
if(sel==0)
dbInk(dbRGB(255,0,0));
dbText(0,0,"Start Game");
dbInk(dbRGB(255,255,255));
if(sel==1)
dbInk(dbRGB(255,0,0));
dbText(0,0,"I don't know anything");
dbInk(dbRGB(255,255,255));
if(sel==2)
dbInk(dbRGB(255,0,0));
dbText(0,0,"Exit");
dbInk(dbRGB(255,255,255));
if(sel==0)
{
if(dbReturnKey==1)
exit=1;
if(sel==2)
{
if(dbReturnKey==1)
end();
}
ALLAH IS THE GREATEST
May he forgive me