partitioning the string

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C

Hey guys!
In my program I have defined 2-D array of string as follows

char str[10];//normal character array
char word[10][100]={
"apple-a fruit","elephant-an animal","cricket-a game"}; //2-D array

If I want to process a string "apple" from "apple-a fruit"
then how should I store "apple" in str.
and then again for processing "elephant" from "elephant-an animal", str should contain nothing.

How should I do it?