So I am not too familiar with C++ but here is a very small section of a bigger project. I basically want to call the driveForward function after a certain button on the controller has been pressed. ( I know how to do the controller part.) I am getting a error on the driveForward function about a return value, no matter what I return the error wont go away. Sorry in advanced if there is a simple solution. Thanks!

```
#include "robot-config.h"
#include "math.h"
int controllerControls() {
}
int driveForward() {
double wheelDiameterCM = 10.16; // wheel diameter (cm)
double travelTargetCM = 20; // distance to travel (cm)
double circumference = wheelDiameterCM * M_PI; // robot travels circumference per 360 degrees of rotation
double degreesToRotate = (360 * travelTargetCM) / circumference;
LeftMotor.setVelocity(50, vex::velocityUnits::pct); // 50% power left
RightMotor.setVelocity(50, vex::velocityUnits::pct); // 50% power right
LeftMotor.rotateFor(degreesToRotate, vex::rotationUnits::deg, false); // non blocking
RightMotor.rotateFor(degreesToRotate, vex::rotationUnits::deg, true); // blocking program till right motor is finished
}
```