[aminalaouti]

hi everyone,
i try to read a file named data.txt that contains the absorption coefficient of gas .
for that i wrote 2 UDFs :
the 1st : DEFINE_ON_DEMAND for reading a variable 'coef'
the 2nd: DEFINE_GRAY_BAND_ABS_COEFF to allocate the coef variable readed previously (from data.txt file) to the absorption coefficient .


//////////////////////////****///////////////////////////
DEFINE_ON_DEMAND(lire)
{
FILE* fp;
float coef[5];
int i, j;
fp = fopen("C:\\Codes\\ALBDF\\Tables\\data.txt", "r");
for (i = 0; i < 5; i++)
{
fscanf(fp, "%f", &coef[i]);
}
fclose(fp);
}
*********/////*********************
DEFINE_GRAY_BAND_ABS_COEFF(abs3, c, t, nb)
{
float coef[5];
switch (nb)
{
case 0: abs_coeff = coef[0]; break;
case 1: abs_coeff = coef[1]; break;
case 2: abs_coeff = coef[2]; break;
case 3: abs_coeff = coef[3]; break;
case 4: abs_coeff = coef[4];
}
return abs_coeff;
}
/////*************////////

The problem is when i hook the 1st udf(DEFINE_ON_DEMAND) the fluent-window disaper ( fluent window closes spontaneously) i dont found the probleme were is ????