g++ how to

[newbie_101]

hi all

ive been programing 4 the last 2 week in window. the other day i installed ubuntu on my machine. now i want to do my programing in ubuntu. im using the gEdit and G++ method. but its not like windows...

so far i type in the terminal:

g++ HelloWorld.cpp
it created 'a.out'. What do i do now.

thanx,
Newbie_101.

[monkeyking]

To run your program

./a.out

[newbie_101]

thank you monky king

[monkeyking]

btw if you want your program to have a more sensible name you can do stuff like.


g++ -o smartname HelloWorld.cpp

[samjh]

To get an output file:

g++ -o outputfile.bin sourcecode.cpp

To display all compiler warnings:

g++ -Wall -o outputfile.bin sourceode.cpp

To generate debugging information (necessary if you wish to use gdb for debugging):

g++ -g -o outputfile.bin sourceode.cpp

Use -O, -O1, -O2, or -O3 for speed optimisations:

g++ -O2 -o outputfile.bin sourcecode.cpp

Use -s to strip symbols, which reduces output file size"

g++ -s -o outputfile.bin sourcecode.cpp

You can combine all that:

g++ -s -O2 -Wall -o outputfile.bin sourcecode.cpp

For more info: http://www.die.net/doc/linux/man/man1/g++.1.html

[lnostdal]

Also see http://www.network-theory.co.uk/docs/gccintro/ (great for beginners) and of course http://gcc.gnu.org/onlinedocs/gcc/ (and for the preprocessor: http://gcc.gnu.org/onlinedocs/cpp/ ).