Codes in C would be much appreciated as I am having trouble writing the codes. Thanks!

int main(int argc, char * * argv)

int countVector(char* filename)

bool readVector(char* filename, Vector * vecArr, int size)

bool writeVector(char* filename, Vector * vecArr, int size)

int compareVector(const void *p1, const void *p2)

Structure

The structure looks like

 #typedef struct { int x; int y; int z; } Vector; 

It contains 3 integer variables, x, y, and z.

#include
	#include
	#include
	#include
	#include "hw08.h"
	#ifdef TEST_COUNTVECTOR
	int countVector(char * filename)
	{
	// count the number of vectors in the file and return the number
	// The input is a binary file. You must use fread.
	// You must not use fscanf(, "%d", )
	//
	// If fopen fails, return -1
	//
	//
	// For the mode of fopen, you may use "r" without b
	//
	}
	#endif
	#ifdef TEST_READVECTOR
	bool readVector(char* filename, Vector * vecArr, int size)
	{
	// if fopen fails, return false
	// read Vectors from the file.
	//
	//
	// if the number of integers is different from size (too
	// few or too many) return false
	//
	// if everything is fine, fclose and return true
	}
	#endif
	#ifdef TEST_COMPAREVECTOR
	int compareVector(const void *p1, const void *p2)
	{
	// compare the x attribute first
	// If the first vector's x is less than the second vector's x
	// return -1
	// If the first vector's x is greater than the second vector's x
	// return 1
	// If the two vectors' x is the same, compare the y attribute
	//
	// If the first vector's y is less than the second vector's y
	// return -1
	// If the first vector's y is greater than the second vector's y
	// return 1
	// If the two vectors' y is the same, compare the z attribute
	//
	// If the first vector's z is less than the second vector's z
	// return -1
	// If the first vector's z is greater than the second vector's z
	// return 1
	// If the two vectors' x, y, z are the same (pairwise), return 0
	}
	#endif
	#ifdef TEST_WRITEVECTOR
	bool writeVector(char* filename, Vector * vecArr, int size)
	{
	// if fopen fails, return false
	// write the array to file using fwrite
	// need to check how many have been written
	// if not all are written, fclose and return false
	//
	// fclose and return true
	}
	#endif
	// This function is provided to you. No need to change
	void printVector(Vector * vecArr, int size)
	{
	int ind = 0;
	for (ind = 0; ind < size; ind ++)
	{
	printf("%6d %6d %6d ",
	vecArr[ind].x, vecArr[ind].y, vecArr[ind].z);
	}
	}

#include
	#include
	#include
	#include
	#include "hw08.h"
	#ifdef TEST_MAIN
	int main(int argc, char * * argv)
	{
	// argv[1]: name of input file (binary)
	// argv[2]: name of output file (binary)
	// check whether there are three arguments.
	// If not, return EXIT_FAILURE. DO NOT print anything
	// use argv[1] as the input to countVector, save the result
	// if the number of vector is 0 or negative, return EXIT_FAILURE
	// otherwise, allocate memory for an array of vectors
	// read the vectors from the file whose name is argv[1]. save the
	// results in the allocated array
	// if reading fails, release memory and return EXIT_FAILURE
	#ifdef DEBUG
	printVector(vecArr, numElem);
	#endif
	#ifdef DEBUG
	printf(" ");
	printVector(vecArr, numElem);
	#endif
	// write the sorted array to the file whose name is argv[2]
	// if writing fails, release memory and return EXIT_FAILURE
	// release memory, return EXIT_SUCCESS
	}
	#endif