CSV edit header file not inserting properly

I have been working on a header file to write and edit csv files for future use. However, I cannot get this code to function properly. Albeit, this is my first time actually using object classes this way so I would like some advice and assistance in fixing the code.
hCSV.h

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <iostream>

#ifndef HCSV_H
#define HCSV_H

using namespace std;

class hCSV
{
    FILE *csvFile;
    public:
        FILE *TcsvFile;
        int pos[2]; // <--- To hold x,y ie col,row
        hCSV(FILE *TcsvFile);
        ~hCSV();

        void hCSVSize(int *p[2]);
        void hCSVEdit(int x, int y, int z);
};

#endif

hCSV.cpp

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <iostream>

using namespace std;

class hCSV
{
    FILE *csvFile;
    public:
        FILE *TcsvFile;
        int pos[2];
        hCSV(FILE *TcsvFile);
        ~hCSV();

        void hCSVSize(int *p[2]);
        void hCSVEdit(int x, int y, int z);
};

hCSV::hCSV(FILE *TcsvFile)
{
    csvFile = TcsvFile;
   // fprintf(csvFile, "11,12,13,14,15\n21,22,23,24,25\n31,32,33,34,35\n41,42,43,44,45\n51,52,53,54,55"); // DEBUG PURPOSES!!! should be 4 row 4 col (0, 1, 2, 3, 4)
}

hCSV::~hCSV()
{
    fclose(csvFile);
}

void hCSV::hCSVSize(int *p[2]){ //<--- For example, (0,0) = A1 in excel
    char temp;
    int col=0, row=0, max=0;
    rewind(csvFile);
    do{
        temp = fgetc(csvFile);
        switch (temp){
            case ',':
                col++;
                break;
            case '\n':
                row++;
                if(col>max) max=col;
                col=0;
                break;
            default:
                break;
        }
    }while(temp!=EOF);
    p[0] = &max; p[1] = &row; //<--- Places the address of col and row into the pointer
}

void hCSV::hCSVEdit(int x, int y, int z){
    char temp;
    int col=0, row=0;
    fpos_t pos;
    rewind(csvFile);
    while(row!=y){
        temp = fgetc(csvFile);
        if(temp == '\n') {row++; fgetpos(csvFile, &pos);}
        if((temp == EOF) && (row<y)){
            fsetpos(csvFile, &pos);
            for(int i=row;i<=y;i++) fprintf(csvFile, "\n");
            fsetpos(csvFile, &pos);
        }
    }
    while(col!=x){
        temp = fgetc(csvFile);
        if(temp == ',') {col++; fgetpos(csvFile, &pos);}
        if((temp == '\n')&&(col<x)){
            fsetpos(csvFile, &pos);
            for(int i=col;i<=x;i++) fprintf(csvFile, ",");
            fsetpos(csvFile, &pos);
        }
    }
    fprintf(csvFile, "%d,", z); //<--- This is supposed to insert z at (x,y)
}

main.cpp

#include "hCSV.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <iostream>

int main(){
	hCSV ptest(fopen("test.csv", "wb+"));
	int *p[2]; //<--- Declares a pointer to an integer array of size 2 (x,y) = (col,row)
	ptest.hCSVSize(p);
	printf("Size is: %d, %d\n\n", *p[0], *p[1]); //<--- Outputs the values at the addresses of col and row
	ptest.hCSVEdit(1,1,0);
	return 0;
}

The size function works; however, the edit function (which really should be insert but i'll change that later) doesn't.

If it helps, i tried adding

 fprintf(csvFile, "here");

to the beginning of the edit function and got a csv file with the following: \n,,E