Rom Bios

I have the following simple code which retreives the amount of memory from a system:

Code:

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#include <iostream.h>
#include <dos.h>

int main()
{
        const MEM = 0x12;
       
        // inregs and outregs variables used in int86() are of union type REGS
        REGS regs;

        int86(MEM, &regs, &regs);

        cout << "\nMemory size:" << regs.x.ax;
}

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I compile this program using Visual C++ without any error, but when I execute it I receive an error message saying it cannot execute the program.

Any ideas?
Thanks.

sorry.....in function int86()...
the &reg is actually:

Code:

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& r e g s  // all together

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You need an old dos compiler. Visual c is a windows compiler.