```/* F07CA_P0W_F C++ Header Example Program.
*
* Copyright 2019 Numerical Algorithms Group.
* Mark 27, 2019.
*/

#include <nag.h>
#include <stdio.h>
#include <iostream>
#include <string>
using namespace std;

int main(void)
{
int       exit_status = 0;
Integer   nrhs = 1, ifail = 0;

cout << "F07CA_P0W_F C++ Header Example Program Results\n\n";
// Skip heading in data file
string mystr;
getline (cin, mystr);

// Read number of x values
Integer n;
cin >> n;

// Allocate arrays containing A and its factorized form, B
// and the solution X.
double *dl=0, *d=0, *du=0, *x=0;
Integer n1 = n-1;
dl  = new double [n1];
d   = new double [n];
du  = new double [n1];
x   = new double [n];

// Read the tridiagonal matrix A and right hand side B, register and copy
double dd;
for (int i = 0; i<n1; i++) {
cin >> du[i];
}
for (int i = 0; i<n; i++) {
cin >> d[i];
}
for (int i = 0; i<n1; i++) {
cin >> dl[i];
}
for (int i = 0; i<n; i++) {
cin >> x[i];
}

// Solve the equations Ax = b for x
ifail = 0;

// Print primal solution
cout << "  Solution:\n";
cout.precision(4);
cout.width(12); cout << " ";
for (int i=0; i<n; i++) {
cout.width(10); cout << x[i];
}

delete [] dl;
delete [] d;
delete [] du;
delete [] x;
return exit_status;
}
```