Omp miscompartes in the call of the same function

Question

Dear friends... I am a beginner in Omp (parallel programming in general) and am going through the following problem, which may be obvious. So I came to ask for help. The call is as follows

  #pragma omp parallel for
  for(int i = 0; i < 2; i++){
    if(i == 0)
      h[i] = fastContComplete(r, cromo->g, 1);
    else
      h[i] = fastContComplete(s, cromo->g, 0);
  }

If I remove the omp call the algorithm works super well. If I run as it is, it returns the structures h[i] in a "miscalculated" way. Detail, the parameters of fastContComplete function are query only, they are not changed at any time of fastContComplete execution. I can’t understand where the mistake is there. I also tried

  #pragma omp parallel private(r, s, cromo)
  {
    i = omp_get_thread_num();
    if(i == 0)
      h[i] = fastContComplete(r, cromo->g, 1);
    else
      h[i] = fastContComplete(s, cromo->g, 0);
  }

and behaves the same way. Someone can explain what’s going on?

Thank you in advance, hugs, Josefran