Ubuntu :: Type "helloWorld" Or "sudo HelloWorld" It Does Not Run?

I coded a simple hello world program to see if I can get something to work on my own in Linux. I used the command "sudo g++ hello.cpp -o helloWorld" to build the executable. However when I am in the terminal (in the right path) and I type "helloWorld" or "sudo helloWorld" it does not run. I look over at google and it told me that I could be in the wrong directory (path) what I am not, or the file permissions could be set wrong. However I looked it up on google as well and I can't see nothing wrong with the file permissions. Hoping someone could lend a helping hand. These are the file permissions as received from "ls -l".

Quote:

drwxr-xr-x 3 root root 4096 2011-01-18 19:38 bin
-rw-r--r-- 1 root root 1050 2011-01-18 19:37 hello.cbp
-rwxr-xr-x 1 root root 7734 2011-01-18 19:41 helloWorld
-rw-r--r-- 1 root root 117 2011-01-18 19:37 main.cpp
drwxr-xr-x 3 root root 4096 2011-01-18 19:38 obj