Error LINK2019 and fatal error LINK1120

I am trying to solve a explicit finite difference method on C++ to price a Barrier Option and i get the following two errors. Can someone please help me with this. Thanks. The code is as follows:

#include<iostream>
#include<cmath>
using namespace std;

double max(double a, double b)
{
return((a>b)?a:b);
}

//-----------------------------------------------------------------------------------

class ExplicitPricer{
private:
double Price;
public:
ExplicitPricer(double s_now, double K, double T, double vol, double r, int I);
double Value(int flag);
~ExplicitPricer(){}
};

ExplicitPricer::ExplicitPricer(double s_now, double K, double T, double vol, double r, int I)
{
int i, j;
const double delta_S = (2 * K) / I; // A choice
const int i_star = floor(s_now / delta_S);
const double WEIGHT = (s_now - i_star * delta_S) / delta_S;
double delta_t = 1 / (vol*vol*I*I);
const int J = floor(T/delta_t) + 1;
delta_t = T / J ;

double* Vprevious_j; Vprevious_j= new double[I+1];
double* Vcurrent_j; Vcurrent_j = new double[I+1];
double* P_u;P_u = new double[I+1];
double* P_m; P_m = new double[I+1];
double* P_d; P_d = new double[I+1];
double* S;S = new double[I+1];
double* S_squared; S_squared = new double[I+1];

const double Halfvol_squared = 0.5*vol*vol;
const double q = r - Halfvol_squared; //drift
double temp1, temp2, temp3;

for (i = 0; i<=I ; i++)
{
S[i] = i*delta_S;
S_squared[i] = S[i]*S[i];
Vprevious_j[i] = max(S[i] - K, 0);
}

for (j = 1; j<=J; j++)
{
for (i = 1; i<=I-1; i++)
{
P_u[i] = (Halfvol_squared* delta_t) / (delta_S * delta_S) + (q * delta_t) / (2 * delta_S);
P_m[i] = 1 - (vol * vol * delta_t) / (delta_S * delta_S);
P_d[i] = (Halfvol_squared * delta_t) / (delta_S * delta_S) - (q*delta_t) / (2 * delta_S);
temp1 = P_d[i] * Vprevious_j[i-1];
temp2 = P_m[i] * Vprevious_j[i];
temp3 = P_u[i] * Vprevious_j[i+1];
Vcurrent_j[i] = temp1 + temp2 + temp3;

//Vcurrent_j[0] = 0.0;
//Vcurrent_j[I] = 2* Vcurrent_j[I - 1] - Vcurrent_j[I - 2];
}

Price = (Vprevious_j[i_star] + WEIGHT*Vprevious_j[i_star + 1]);

delete[] Vprevious_j;
delete[] Vcurrent_j;
delete[] P_u;
delete[] P_m;
delete[] P_d;
delete[] S;
delete[] S_squared;

}
}

double ExplicitPricer::Value(int flag)
{
if(flag==0)
return Price;
}

int main()
{
ExplicitPricer Ep(100,100, 1, 0.2, 0.05, 40);
cout << "Explicit's Price is : " << Ep.Value(0) << endl;
return 0;
}