智能玩具小车程序。小车主要具有以下几个功能：直走四米；直角转弯；蛇形避障；红外寻迹；自动红外避障和自动寻光源功能。-Intelligent toys car program. Car has the following functions: straight four meters right angle turn snake-avoidance infrared tracing automatic obstacle avoidance and homing infrared light