Could somebody help me find the cause of a Segmentation Fault error in my program?

[jcancino]

The program compiles and works all the way until the multiplecheck function, any help would be great. The program is not finished yet and I am new to C programming so I know the program may not be the most efficient.

#include<stdio.h>
#include<math.h>
#define ARRAYSIZE 30

int getData(int[]);
void printData(int[],int);
int multipleCheck(int[],int);
int multipleCount(int[],int,int,int);

int main()
{
  int data[ARRAYSIZE];
  int num_data;
  int multi_ct;

  num_data = getData(data);
  printData(data, num_data);
  multi_ct = multipleCheck(data,num_data);
  return(0);
}

int getData(int array[])
{
  int lcv; //local counting variable
  int ct; //the number of times that the user enters a number

  lcv = 0;
  ct = 1;
  while (lcv < ARRAYSIZE)
  {
    printf("Enter the data #%d or -1: ", lcv + 1);
    scanf("%d", &array[lcv]);
    ct++;
    if (array[lcv] < 0)
    {
      array[lcv] = 0;
      lcv = 49;
      ct--;
    }
    lcv++;
  }
  printf("\n");
  return(ct);
}


void printData(int array[],int num_d)
{
  int lcv;

  printf("Data entered: ");
  for (lcv = 0; lcv < (num_d - 1); lcv++)
  {
   printf("%d ", array[lcv]);

  }
  printf("\n");
}


int multipleCheck(int array[], int num_d)
{
  int lcv;
  int lcv2;
  int ct;
  int ctmax;
  int hold;

  ctmax = 0;

  for (lcv = 0; lcv < (num_d - 2); lcv++)
  {
    for (lcv2 = lcv + 1; lcv2 < (num_d - 1); lcv2++)
    {
      hold = array[lcv] * array[lcv2];
      ct = multipleCount(array,lcv,hold,num_d);
      if (ct > ctmax)
      {
        ctmax = ct;
      }
    }
  }
  printf("\n%d\n", ctmax);
  return (ctmax);
}


int multipleCount(int array[], int start, int num_p,int num_d)
{
  int lcv;
  int lcv2;
  int ct;

  ct = -1;

  for (lcv = 0; lcv <= (num_d - 1); lcv++)
  {
    for (lcv2 = lcv + 1; lcv <= num_d; lcv2++)
    {
      if ((array[lcv] * array [lcv2]) == num_p)
      {
        ct++;
      }
    }
  }
  return(ct);
}

[newb16]

line 98: condition for loop is wrong: for (lcv2 = lcv + 1; lcv <= num_d; lcv2++)