Thread: how to print a increasing number of words?

hello,
im looking for a refrence to learn from and/or help with the algorithm.
i have a homework assignment where i recieve a string and then i have to print a incresaing amount of its words, like this:

input: this is a example
output: this
this is
this is a
this is a example

im allowed to loop across the string (which is a max of 100 chars) only once.
my idea is to:
receive the string and save it in a fixed array.
allocate memory and save the string in it.
call a function that replaces ' ' with '/0' .
count how many times '/0' appears (=n).
for (i=0; i<n; i++)
use scanf i times to read the string in to a nulled array-(i dont know how to do this)
print the scaned string.
i++

have you got a easier way to do this or any advice?
thanks a lot,
gershon

thanks a lot for your help!
i think that what ill do is a loop inside a loop for printing one char at a time. the loop will be updated by the number of '/0' chars that it will incounter (they will be put inside the code by a function.
have a gerat weekend,
gershon