this code does not work

main.cpp
#include "Image.h"
#include "image.cpp"
#include <cstring>
#include "SandPile.h"
#include "SandPile.cpp"

struct Arguments{
  int length;
  int width;
  char *input_filepath;
  char *output_filepath;
  uint32_t iterations = 0;
  uint32_t frequency;
};

void Output(int length, int width, SandPile ModelOutput){
    Image image(width, length);
    std::cout << ModelOutput.sanding.size() << std::endl;
    for(int i = 0; i < length; i++){
        for (int j = 0; j < width; j++){
            if (ModelOutput.sanding[i][j] == 0){
                image.SetColor(Color(255, 255, 255), i, j);
            }
            if (ModelOutput.sanding[i][j] == 1){
                image.SetColor(Color(0, 255, 0), i, j);
            }
            if (ModelOutput.sanding[i][j] == 2){
                image.SetColor(Color(255, 0, 255), i, j);
            }
            if (ModelOutput.sanding[i][j] == 3){
                image.SetColor(Color(255, 255, 0), i, j);
            }
            if (ModelOutput.sanding[i][j] > 3){
                image.SetColor(Color(0, 0, 0), i, j);
            }
        }

    }
    image.Export("image.bmp");
    std::cout<<"file created\n";
}

void TSVParse(char* path, SandPile& SandCoords){
    std::ifstream infile(path);
    int buf;
    int iter = 0;
    int x;
    int y;
    int val;
    while(infile >> buf) {
        if (iter % 3 == 0) {
            x = buf;
        }
        else if (iter % 3 == 1) {
            y = buf;
        }
        else {
            val = buf;
            SandCoords.sanding[x][y] = val;
        }
        iter++;
    }
}

int main(int argc, char* argv[]) {
    Arguments args;
    for (int k = 1; k < argc; k++) {
        std::string opts = argv[k];
        if (strcmp(argv[k], "-l") == 0 || strcmp(argv[k], "--length") == 0) {
            args.length = std::stoi(argv[k + 1]);
        }
        if (strcmp(argv[k], "-w") == 0 || strcmp(argv[k], "--width") == 0) {
            args.width = std::stoi(argv[k + 1]);
        }
        if (strcmp(argv[k], "-i") == 0 || strcmp(argv[k], "--input") == 0) {
            args.input_filepath = argv[k + 1];

        }
        if (strcmp(argv[k], "-o") == 0 || strcmp(argv[k], "--output") == 0) {
            args.output_filepath = argv[k + 1];
        }
        if (strcmp(argv[k], "-m") == 0 || strcmp(argv[k], "--max-iter") == 0) {
            args.iterations = std::stoi(argv[k + 1]);
        }
        if (strcmp(argv[k], "-f") == 0 || strcmp(argv[k], "--freq") == 0) {
            args.frequency = std::stoi(argv[k + 1]);
        }
    }
    SandPile Making_Scenes(args.length, args. width);
    TSVParse(args.input_filepath, Making_Scenes);
    for(int i = 0; i < args.iterations; i++){
        Making_Scenes.Piling();
        Output(args.length, args.width, Making_Scenes);
    };

}

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
SandPile.h
#include <iostream>
#include <vector>
#include <string>
#include <fstream>
#ifndef LABWORK3__SANDPILE_H_
#define LABWORK3__SANDPILE_H_

class SandPile {

  int length_sanding;
  int width_sanding;
 public:
    std::vector<std::vector<int>> sanding;
    SandPile();
    SandPile(int length_sanding, int width_sanding);
    ~SandPile();
  friend void TSVParse(char* path, SandPile& SandCoords);
    void Piling();
    void PrintPile();

};
#endif //LABWORK3__SANDPILE_H_
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
Sandpile.cpp


#include "SandPile.h"

SandPile::SandPile() {


}
SandPile::SandPile(int length_sanding, int width_sanding) {
    std::vector<std::vector<int>> sanding;
    this->length_sanding= length_sanding;
    this-> width_sanding = width_sanding;
    sanding.resize(length_sanding);
    for(int i = 0; i < length_sanding; ++i) {
        sanding[i].resize(width_sanding);
    }
    for (int  i = 0; i < sanding.size(); i++){
        for(int j = 0; j < sanding[i].size(); j++){
            int a(0);
            sanding[i][j] = a;
        }
    }
}
SandPile::~SandPile() {}
void SandPile::Piling() {
    for (int i = 0; i < sanding.size(); i++) {
        for (int j = 0; j < sanding[i].size(); j++) {
            if (sanding[i][j] > 3) {
                if (i + 1 < sanding.size()) {
                    sanding[i + 1][j] += 1;
                }

                if (j + 1 < sanding[i].size()) {
                    sanding[i][j + 1] += 1;
                }

                if (i + 1 > 0) {
                    sanding[i - 1][j] += 1;
                }

                if (i - 1 > 0) {
                    sanding[i + 1][j] += 1;
                }

                sanding[i][j] -= 4;
                }

            }

    }


}
void SandPile::PrintPile() {
    for(int i = 0; i < sanding.size(); i++){
        std::cout << "\n";
        for (int j = 0; j < sanding[i].size(); j++){
            std::cout << sanding[i][j] << " ";
        }

    }

}