How can i write "" ln 3 "" on C++ ?

[Dimesh]

Hi.
-----
Thanks for reading ...

I want to write for example: ln 3

Is there is any command or function for it ...!

[Mahsa_C++]

I think checking out this link will solve your problem:

http://www.cplusplus.com/reference/clibrary/cmath/log/

there is a math.h ( or there days using cmath instead) which does almost all mathematical operations you might need.

[sharathg.satya]

we have a direct support for the logarithmic functions in c.
include math.h in your program and this solves the problem of find ln 3..
this ln 3 is similar to log(3);
i think the site mentioned by mahsa_c++ also helps your problem..
thanks.
please help me in using system(); in c++
please....

[Mahsa_C++]

Dear Sharathg ,

System() functions in C or C++ provides you to perform command prompt ( or Shell) command in your program. usually typing the very same command that u do in a shell, in the argument field of the system( ... ) function will lead to the performance of that command.
For example in a cmd ( command prompt ) in windows typing "cls" clears the console. now typing

system("cls");

will clear the program console.

My searches said to me that there is a very similar discussion in daniweb in here :
http://www.daniweb.com/forums/thread82942.html

and also, i guess you'll need to include the file <windows.h> in your file too.

Regards
Mahsa

[sharathg.satya]

ha thanks
but its not executing....

can we execute one c program from another using this system() ??

[sharathg.satya]

and why doesnt this code open the file specified located in the same directory??

system("type hello.txt");

please explain

[I_am_not_binky]

Please paste the whole of your code.

[sharathg.satya]

void main()
{
system("type hello.txt");
}

i got the same when i browsed the net.....
please explain