RobotC Help

Hi, I am using robotc, I made a program and could somebody tell me why it is not working?

const tSensors touchSensor = (tSensors) S1; const tSensors soundSensor = (tSensors) S3; const tSensors lightSensor = (tSensors) S2;

task main() { while(SensorValue(touchSensor) == 0) //loop while the touch sensor is not pressed { motor[motorB] = 100; motor[motorC] = 100; } //exit loop when touch sensor is pressed

while(SensorValue(soundSensor) >20) //loop while the sound sensor is not activated { motor[motorB] = 0; motor[motorC] = 0; motor[motorA] = 0; }

//close claw

motor[motorA] = 75; wait1Msec(500);

//turn right

motor[motorB] = 100; wait1Msec(2000);

while(SensorValue(lightSensor)