Problem in returning the used defined data type using structure

[Manoj7390]

hi everyone.. I have written a program where I want to return three user defined data types to the another main() function (here i have not mentioned that main). I want to return {Pa,c1,c2} from this program. Please help me out.

#include <cstdlib>
#include <iostream>
#include <vector>
using std:: cout;
using std:: cin;
using std:: endl;
using namespace std;
#include <math.h>
#include "FiniteFieldElement.hpp"

namespace Cryptography
{
template<int P>
class EllipticCurve
{
public:

            typedef FiniteFieldElement<P> ffe\_t;
             
            class   Point
            {
                friend  class   EllipticCurve<P>;
                typedef FiniteFieldElement<P> ffe\_t;
                ffe\_t  x\_;
                ffe\_t  y\_;
                EllipticCurve    \*ec\_;
                
                void   addDouble(int m, Point& acc)
                {        
                    if ( m > 0 )
                    {       
                        Point r = acc; 
                        for ( int n=0; n < m; ++n )
                        {
                            r += r;     // doubling step                          
                        }
                        acc = r;
                    }        
                }
                
                Point scalarMultiply(int k, const Point& a)
                {
                    Point acc = a;
                    Point res = Point(0,0,\*ec\_);
                    int i = 0, j = 0;
                    int b = k;
                    
                    while( b )
                    {
                        if ( b & 1 )
                        {
                            addDouble(i-j,acc);
                            res += acc;           
                            j = i;  
                        }
                        b >>= 1;
                        ++i;
                    }
                    return res;
                }
                
                void    add(ffe\_t x1, ffe\_t y1, ffe\_t x2, ffe\_t y2, ffe\_t & xR, ffe\_t & yR) const
                {
                                          
                    if ( x1 == 0 && y

[Lost User]

Return it to where, and where and what are these variables? Please also delete your duplicate of this post.

Use the best guess

[Stefan_Lang]

Both threads are copies from here