Re: 1 loop structure to find the sum of odd and even integers

saqib_ · #11 28-Oct-2009, 03:43

I use the following code,

CPP / C++ / C Code:

/**/

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{

// ---> Stuff goes here

system("pause");
return 0;
}

Mexican Bob · #12 28-Oct-2009, 04:51

Quote:

Originally Posted by saqib_

I use the following code,

CPP / C++ / C Code:

/**/

#include <iostream>
#include <cstdlib>

using namespace std;

int main()
{
    // ---> Stuff goes here

    system("pause");
    return 0;
}

Any "system" call is, by its very nature, going to be platform specific and the "pause" executable typically is not available on Unix or Mac, rather, only DOS and Windows.

You need to read the GUIDELINES.

MxB

saqib_ · #13 28-Oct-2009, 06:21

Does it mean that same c++ code can not be run on different platforms? A programmer has to keep in mind the operating system first and then write the code.

Mexican Bob · #14 28-Oct-2009, 06:38

Quote:

Originally Posted by saqib_

Does it mean that same c++ code can not be run on different platforms?

...in many cases one can easily write C++ code that does not perform as intended (desired). A good example is code that expects data to be in little endian format when executing on a big endian machine or vice versa. Another is when using calls that invoke operating system specific "capabilites" such as the standard C library "system" call. You are passing in the name of an "executable" (a command) in the form of a const char* variable. It is possible for the C (or C++ in this case) code to compile without error or warning if I write the following:

CPP / C++ / C Code:

int result = system("do_floop_bloak_neffer_yarndote");

...I'm guessing that there are not going to be many "systems" out there that offer the do_floop_bloak_neffer_yarndote command.

In your case, the "pause" command is available because your particular system exposes it to the command line.

Quote:

Originally Posted by saqib_

A programmer has to keep in mind the operating system first and then write the code.

...or at least avoid any platform-specific code.

MxB

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