gershonj

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

Elysia

I would use strchr to find each space in the string.
From every space, print the entire string, beginning from the beginning, to the place where strchr found a space.
Then use strchr again to find the next space and repeat.

I'm assuming that...
...means that you are allowed to use a loop inside a loop, but not do two loops after each other.
Otherwise this won't work.

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matsp

Alternatively, you can do it with just one loop, if you copy the original string into a new string, and temporarily end the string with a zero when you find a space, then print string "as far as it is now" (followed by a newline) and continue copying/scanning.

--
Mats

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gavra

one loop + one variable + one variable
I think it's enough.

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gershonj

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