How to expire an application/demo after x days?

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Dear Sirs,
I made one dll for one indicator bu VC++ 2008. I want make one change in this code that after for example 7 days expire that.
I mean works it only for 7 days after first start and time that defined on that.
In below you can see one my sample code in C++ and I want add some line in this code for making this limitation time:

#define WIN32_LEAN_AND_MEAN // Exclude rarely-used stuff from Windows headers
#include <windows.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
//----
#define MT4_EXPFUNC __declspec(dllexport)
/

//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int Len = 14;
double ld_0;
double ld_8;
double ld_16;
double ld_24;
double ld_32;
double ld_40;
double ld_48;
double ld_56;
double ld_64;
double ld_72;
double ld_80;
double ld_88;
double ld_96;
double ld_104;
double ld_112;
double ld_120;
double ld_128;
double ld_136;
double ld_144;
double ld_152;
double ld_160;
double ld_168;
double ld_176;
double ld_184;
double ld_192;
double ld_200;
double ld_208;

MT4_EXPFUNC double __stdcall Sig(double Ba,int ld_216,double Hi,double Lo,double Clo)
{

for (int li_224 = ld_216; li_224 >= 0; li_224--) {
if (ld_8 == 0.0) {
ld_8 = 1.0;
ld_16 = 0.0;
if (Len - 1 >= 5) ld_0 = Len - 1.0;
else ld_0 = 5.0;
ld_80 = 100.0 * ((Hi + Lo + Clo) / 3.0);
ld_96 = 3.0 / (Len + 2.0);
ld_104 = 1.0 - ld_96;
} else {
if (ld_0 <= ld_8) ld_8 = ld_0 + 1.0;
else ld_8 += 1.0;
ld_88 = ld_80;
ld_80 = 100.0 * ((Hi + Lo + Clo) / 3.0);
ld_32 = ld_80 - ld_88;
ld_112 = ld_104 * ld_112 + ld_96 * ld_32;
ld_120 = ld_96 * ld_112 + ld_104 * ld_120;
ld_40 = 1.5 * ld_112 - ld_120 / 2.0;
ld_128 = ld_104 * ld_128 + ld_96 * ld_40;
ld_208 = ld_96 * ld_128 + ld_104 * ld_208;
ld_48 = 1.5 * ld_128 - ld_208 / 2.0;
ld_136 = ld_104 * ld_136 + ld_96 * ld_48;
ld_152 = ld_96 * ld_136 + ld_104 * ld_152;
ld_56 = 1.5 * ld_136 - ld_152 / 2.0;
ld_160 = ld_104 * ld_160 + ld_96 * fabs(ld_32);
ld_168 = ld_96 * ld_160 + ld_104 * ld_168;
ld_64 = 1.5 * ld_160 - ld_168 / 2.0;
ld_176 = ld_104 * ld_176 + ld_96 * ld_64;
ld_184 = ld_96 * ld_176 + ld_104 * ld_184;
ld_144 = 1.5 * ld_176 - ld_184 / 2.0;
ld_192 = ld_104 * ld_192 + ld_96 * ld_144;
ld_200 = ld_96 * ld_192 + ld_104 * ld_200;
ld_72 = 1.5 * ld_192 - ld_200 / 2.0;
if (ld_0 >= ld_8 && ld_80 != ld_88) ld_16 = 1.0;
if (ld_0 == ld_8 && ld_16 == 0.0) ld_8 = 0.0;
}
if (ld_0 < ld_8 && ld_72 > 0.0000000001) {
ld_24 = 50.0 * (ld_56 / ld_72 + 1.0);
if (ld_24 > 100.0) ld_24 = 100.0;
if (ld_24 < 0.0) ld_24 = 0.0;
} else ld_24 = 50.0;
return(ld_24);
}

}

Best Regards,
Reza.
 
fxturn:
In below you can see one my sample code in C++ [...]

In what sense is it yours?

 
gordon:

In what sense is it yours?


Dear sir,
thank you for your reply.
What you mean?
 
fxturn:
What you mean?

What do u think I mean? Does de-compiling code make it yours?

 
gordon:

What do u think I mean? Does de-compiling code make it yours?


dear Sir,
Thank you for your reply.
I want check this only for leaning no other thing.
Thanks.
 
fxturn:
I want check this only for leaning no other thing.

Would u steal a programming book? U want to learn after all... So it must be OK.

 
gordon:

Would u steal a programming book? U want to learn after all... So it must be OK.

It's always a good laugh when someone asks how to protect code which they've stolen in the first place. In addition, there's no way that this DLL is going to work as it stands, because it requires all sorts of data which isn't being passed in. Whoever's taken this out of an indicator and tried to stick it into a C++ DLL has no idea what they're doing.

 
So that's what that is. I always wondered why/how people would code with those strange variables. Never really cared to ask.
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