[Help][C++]Freeze doesn't work!

[Timzorize]

Hi, I just tested how to block the computer by doing this:

#include <windows.h>

int main(){
    FreeConsole();
    while(1){
             BlockInput(true);
             }
}

But why doesn't it work?




One more thing, why does the cmd box disappear when I've entered for example 3 and 7?

#include <iostream>

using namespace std;

int main() 

{   
    int tal1;
    int tal2;
    int summa;
    
    cout << "Skriv in ett tal: ";
    cin >> tal1;
    cout << "Skriv in ett tal till: ";
    cin >> tal2;
    
    summa = tal1 + tal2;
    
    cout << "Det blir: " << summa;
    

    return 0;
    system("PAUSE");
 
}

When its going to write out the summa then the window just disappear. (Poping down)

[SKU]

Any code after the return statement can't get executed. Also, BlockInput works fine, didn't try it with the FreeConsole( ) function though.

[Timzorize]

So, will you help me to find out the problem on the first code?

[SKU]

My knowledge is kind of limited about such functions.

#include <iostream>
#include <windows.h>
using namespace std;

int main()
{
FreeConsole( );
cin.get();
return 0;
}

The FreeConsole() exits the application in this case, so your BlockInput function is never reached. Guess you'll need another way to hide your console.

[Cypher]

In your first example, I have no idea what you're trying to achieve.

First off, don't use "while(1)", it's considered poor form. A better approach for 'infinite' loops is "for(;". Second, that loop will saturate the CPU because it never gives up any CPU time (google "Sleep"). Third, why the **** are you repeatedly calling BlockInput? That's just so terrible I don't even know how to put it into words. I assume your FreeConsole call is to hide the console? I guess you think it makes you "leet" to call BlockInput and hide the console, right? Well, you're obivously a retard but I'll point you in the right direction anyway. Google ShowWindow, you can use it to hide your console.

Second example. You're calling 'return 0' before "system("PAUSE")". Think about that for a second. If you return from a function any code past that point will NEVER be reached. Also, never never never use 'system("pause")', EVER! Okay? Seriously. The console disappears because the system destroys windows automatically when a process terminates, you need to do something to keep the window open. Just request some dummy input that gets discarded.

Lastly. Don't declare all your variables at the top of a function, declare as close as you can to the point of initialization. And if at all possible declare and initialize in the same statement.

[Timzorize]

In your first example, I have no idea what you're trying to achieve.

First off, don't use "while(1)", it's considered poor form. A better approach for 'infinite' loops is "for(;". Second, that loop will saturate the CPU because it never gives up any CPU time (google "Sleep"). Third, why the **** are you repeatedly calling BlockInput? That's just so terrible I don't even know how to put it into words. I assume your FreeConsole call is to hide the console? I guess you think it makes you "leet" to call BlockInput and hide the console, right? Well, you're obivously a retard but I'll point you in the right direction anyway. Google ShowWindow, you can use it to hide your console.

Second example. You're calling 'return 0' before "system("PAUSE")". Think about that for a second. If you return from a function any code past that point will NEVER be reached. Also, never never never use 'system("pause")', EVER! Okay? Seriously. The console disappears because the system destroys windows automatically when a process terminates, you need to do something to keep the window open. Just request some dummy input that gets discarded.

Lastly. Don't declare all your variables at the top of a function, declare as close as you can to the point of initialization. And if at all possible declare and initialize in the same statement.

In the first I'm trying to freeze the computer, to lock it.

Okay, what should I use instead of system("PAUSE") if I want the cmd box to stay and not disappear after 0.1 seconds?

[camicio]

He's saying to use a getchar(); or something.

Here's why you shouldn't use system("pause");
system("Pause") - Google Search