Thread: values assignment to matrix pointer

This code build dinemically allocated square matrix (designed for the dimenssion of the 1D array), and copy into it an array. The empty places in the matrix are filled with -1.
The thing is I have the pointer to the matrix, but I cannot figure out how to asign vec1's values to it.

Code:

#include<stdio.h>
#include<malloc.h>
#include<math.h>
#include<stdlib.h>


#define LENGTH   11

void CreateMatrix(int vec1[], int ***mat, int *size)
{
	
	int i=0, j, k=0, count=0, temp;
	while (vec1[i]>0)
	{
		count++;
		i++;
	}
	temp=count;
	while (sqrt(count)-4!=0)
		count++;
	*size =count/4;
	*mat=(int **)malloc (sizeof(int) * (*size));
		if (!mat) exit(0);
	for (i=0;i<*size;i++)
	(*mat)[i]=(int *)malloc (sizeof(int) * (*size));
		if (!mat[i]) exit(0);

	while (k<temp)
		for (i=0;i<*size;i++)
		   for (j=0;j<*size;j++)
		
		   {
		        (*mat)[i][j]= vec1[k];  //the problem is 
                                              //about this stage
  		       k++;
		   }
	while (k<(*size)*(*size))			
		for (i=0;i<*size;i++)
		   for (j=0;j<*size;j++)
			{
				*mat[i][j]=-1;
				k++;
			}	
}


int main (void)
{
	int vec1[LENGTH]={6,4,9,8,9,1,14,56,64,78,-1};
	int **mat, size=0;
	CreateMatrix(vec1, &mat, &size);
               return 1;
}