I’m trying to solve a matrix equation outside of my main function i.e. I form the matrices A and b in my main function then pass them onto a solver.cpp file which then solves them and gets me the x. I now want to use that x (which is an array defined as double *x=new double [m] ) in my main function. Can someone please help with this? I’ve tried several ways but keep getting errors.
Thanks a lot!

#include
int main()
{
using namespace std;
cout <> nValue;

if (nValue > 3)

{
cout << "A"<<endl;

cout << "enter a number"<> x;
}

}

suppose out of the block of if i need value of x. what can i do for getting value of x out of the block?

Why would you need to create a file (say) globals.cpp AND ALSO globals.h to call the .cpp? Why not just call the file globals.h instead and use that?

It just seems pointless having two files do the same thing as one.