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Syntax error when interpreting UDF file

Hello,
I'm using UDF in my simulation to achieve the actual velocity profile at the inlet (3D case). When I tried to interpret my UDF file in FLUENT, an error as below occurred.

Error: /home/m_shinohara/UDF2.c: line 4: syntax error.

I don't know how to fix the error since this is my very first time using UDF.
Here is my UDF file:

PHP Code:


		
			
#include "udf.h"

#define Q 3.3e-5  //unit m3/sec

#define Diameter 4.9e-3  //unit m

DEFINE_PROFILE(axialVelocity,t,i)

{

    real x[ND_ND];

    real r,Area;

    face_t f;

    Area=(M_PI/4.0)*pow(Diameter,2);

    begin_f_loop(f,t)

    {

        F_CENTROID(x,f,t);

        r=sqrt(pow(x[0],2)+pow(x[1],2));

        F_PROFILE(f,t,i)=(2.0*Q/Area)*(1-pow(2.0*r/Diameter,2));

    }

    end_f_loop(f,t)

}

I'm very glad if someone could help me to solve his problem.
Thank you in advance.

sheck line 4

Area=(M_PI/4.0)*pow(Diameter,2);
M_PI and pow(diameter,2)

M_PI AND DIAMETER define them

Thank you for your suggestion, mohamed. I'll be sure to try it.

The "//" is C++ comment syntax. You should use c comment syntax "/* */".

Hi, blackmask. Thank you for the information.
I'll fix my UDF file:)