Jonrezz

when i am programming in dev-C++, i notice that it adds a strange line to the begining for it to work, but its not mentioned in any instructions or anything, here is how the beginning code looks in dev-C++:

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
....
}

and this is what i see in the instructions:

#include <iostream.h>
int main ()
{
....
}

is this just a preference by the specific compiler? because i cant run the program without the extra lines.

can someone clarify please? thanks!

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Xaimus

Could you clarify some more? What exactly is the weird line? The extra cstdlib include, or the addition of int argc, char **argv?

Jonrezz

sry, the line i dont understand is:

using namespace std;

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kris_cs1

Well I don't know C++ (planning on starting learning soon).

However, the line #include <cstdlib> allows the use of the functions from the cstdlib library in your code. Those functions can be found here: http://www.cplusplus.com/ref/cstdlib/

For this line: using namespace std;, go here:
http://www.steveheller.com/cppad/Output/basics10.html

For this line: int main(int argc, char *argv[]), try here:
http://publications.gbdirect.co.uk/c...s_to_main.html

Basically, those lines are just put in by Dev C++ to make life easier. As a beginner, unless otherwise stated not to have them in the instructions, it should be fine to just keep them in.

As i do not C++, I am not completely sure but I hope this helps.
Kris

EDIT: Oh, it was just namespace you did not understand. Basically it just saves time writing out extra syntax over and over again

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Jonrezz

ok thanks!

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