Please Plot Graph (Input is added at bottom)

Plot Graph

#include <algorithm>
#include <iostream>
#include <vector>
#include "pbPlots.hpp"
#include "supportLib.hpp"

using namespace std;

int main() {

	// Rading Count Of Input Values From User
	int size;
	cout << "Enter count of values: ";
	cin >> size;

	// Declaring Array Of Force And Elongation
	double force[size];
	double elongation[size];

	cout << "Enter values of Force And Elongation\n\n";
	for (int i = 0; i < size; i++) {
		cout << "Please enter " << (i+1) <<"th force value (Newton): ";
    	cin >> force[i] ;
		cout << "Please enter " << (i+1) <<"th elongation value (Meter): ";
    	cin >> elongation[i];
	}

	// Declaring Spring Constant Array
	double springConstant[size];

	// Defining Vector For Graphs
	vector<double> xs{};
	vector<double> ys{};

	// Calculating Spring Constant
	cout << "\t\t\t\tResult\n\n";
	for ( int i = 0; i < size; i++) {
		// Pusing Variables In Vector For Graph

		xs.push_back(elongation[i]);
		ys.push_back(force[i]);
		if( force[i] == 0 || elongation[i] == 0) {
			springConstant[i] = 0;
		} else {
			springConstant[i] = force[i] / elongation[i];
		}
		cout<< "Force: " << force[i] <<"N\n";
		cout<< "Change In Length: " << elongation[i] <<"m\n";
		cout << "Spring Constant: " << springConstant[i] << "N/m\n\n";
	}

	bool success;
     StringReference *errorMessage = new StringReference();
	RGBABitmapImageReference *imageReference = CreateRGBABitmapImageReference();


	success = DrawScatterPlot(imageReference, 600, 400, &xs, &ys, errorMessage);

	if(success){
		vector<double> *pngdata = ConvertToPNG(imageReference->image);
        	WriteToFile(pngdata, "example1.png");
        	DeleteImage(imageReference->image);
	} else{
	     cerr << "Error: ";
		for(wchar_t c : *errorMessage->string){
            	wcerr << c;
        	}
        	cerr << endl;
	}
	
	return 0;
}





Input:
4
10
0.02
20
0.04
25
0.08
70
0.10