Check if a string contains another string (substring)

hello everyone

how can i check that a string contains another string(sub string), like:
if i have a string like this:

Code:

---

GET /send.htm?Text=PAYLOAD+00500+11611

---

and i want to check whether this string contains the word "PAYLOAD", and if it does do something.
here the sub string would be "PAYLOAD".
how can I do it?

You can use strstr() from <string.h>.

could you show me how, with an example code or something ? :)

Yes :)

wow :) nice ....
thanks