if(kbhit())
{
    ch=getch();

    if(ch=='e'){break;}   //exit

    if(ch=='d')           //move right
    {
    ax=1;
    if(vx<vellim){vx=vx+ax*dt;}
    dx=vx*dt;
    x+=dx;
    s_mario(x,y); //This function draws the character at the appropriate place

    }

    if(ch=='a')             //move left
    {
    ax=-1;
    if(vx>-vellim){vx=vx+ax*dt;}
    dx=vx*dt;
    x+=dx;
    s_mario(x,y);
    }

    if(ch=='w'&&jumpkey==0)   //jump
    {
    vy=60;
    jumpkey=1;
    }

}

if(jumpkey==1)
{
vy=vy-g;
dy=vy*dt;
y-=dy*0.1;
if(y>400){y=399;vy=0;jumpkey=0;}
s_mario(x,y);

}

if(!kbhit())
{       vx*=c;
    dx=vx*dt;
    x+=dx;
    s_mario(x,y);
    delay(5);
}