Help needed on strings

[aravindva]

Can somebody help me with the following problem...

It's very urgent..

Given a string and a sub-string as input, write a function to return the number of occurrences and/or position of the first occurrence.

[frankie]

This really seems an homework task.
So to help you try the function "strstr" from standard library (you'll find description in the help). 
prototype:

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char * strstr(const char *string, const char *substring);