Robot Rotation Angle and Turn Direction

Working on Robot project and need to figure New Heading rotation amount and turn direction.
Input parameters are Current Heading and New Heading, Output values are Rotation amount in degrees and turn direct Port (Left) or Starboard (Right). Have solution below but it does not look very elegant. Any thoughts for more elegant solution?
Many thanks in advance imk

void AngleDiff( int RobotHeading , int NewHeading)
{
int SteeringAngle = RobotHeading - NewHeading;
char TurnDirection; // P = Port (Left) or S = Starboard (Right) 

if(  SteeringAngle > 180 )
 {
 SteeringAngle -= 360;
 SteeringAngle = abs( SteeringAngle );
 TurnDirection = 'S';
 return;
 }

if( SteeringAngle < -180 )
 {
 SteeringAngle += 360;
 TurnDirection = 'P';
 return;
 }

if( SteeringAngle < 0 )
 {
 SteeringAngle = abs( SteeringAngle );
 TurnDirection = 'S';
 }
else
 TurnDirection = 'P';
}

Perhaps something like this:

if (SteeringAngle > 180)
{
    SteeringAngle -= 360;
}
else if (SteeringAngle < -180)
{
    SteeringAngle += 360;
}
TurnDirection = SteeringAngle < 0 ? 'S' : 'P';
SteeringAngle = abs(SteeringAngle);