To work with lists many c/c++ programmer use a simple for-loop. I will try to explain how this can be made a little bit easier. For that I use the self-explaining script language python.
Here is a simple example to filter all odd integers from a list in simple python 2.x syntax.
def filter_odd(myList):
result = [] # initialize the result list
for num in myList: # iterate over the list
if num % 2 == 1: # modulo 2 return 1 for odd integers
result.append(num) # add to the result
return result
