add a } after
else if ((ponged_ball.pos_y < 20) && (ponged_ball.pos_y > 10) && (ponged_ball.pos_x > upper_pong.pos_x - 12) && (ponged_ball.pos_x < upper_pong.pos_x + 90))
{
snd_play (beep_1, 70, 0);
ball_speed.x = 3 - random(3);
ball_speed.y = 3 + random(3);
}

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