i get this error
// D:\scripting\carmod.sma(44

: error 021: symbol already defined: "client_Pre
Think"
//
// 1 Error.
// Could not locate output file D:\scripting\compiled\carmod.amx (compile failed
).
//
// Compilation Time: 1,3 sec
// ----------------------------------------
Code:
public client_PreThink(id)
{
if(incar[id] != 0)
{
new bufferstop = entity_get_int(id,EV_INT_button)
if(bufferstop != 0) {
entity_set_int(id,EV_INT_button,bufferstop & ~IN_ATTACK & ~IN_ATTACK2 & ~IN_ALT1 & ~IN_USE)
}
if((bufferstop & IN_JUMP) && (entity_get_int(id,EV_INT_flags) & ~FL_ONGROUND & ~FL_DUCKING)) {
entity_set_int(id,EV_INT_button,entity_get_int(id,EV_INT_button) & ~IN_JUMP)
}
return PLUGIN_CONTINUE
}
return PLUGIN_HANDLED
}
----------
public client_PreThink(id) {
if(incar[id])
{
new Float:VecVel[3],Float:VecAngles[3];
entity_get_vector(id,EV_VEC_velocity,VecVel);
entity_get_vector(id,EV_VEC_v_angle,VecAngles);
VecVel[0] = floatcos(VecAngles[1],degrees) * 800.0;
VecVel[1] = floatsin(VecAngles[1],degrees) * 800.0;
entity_set_vector(id,EV_VEC_velocity,VecVel);
}
return PLUGIN_HANDLED
}
how can i fix this?