in c not c++ please
void getMostFrequenthord(TrieNode *root, char *str) Description: Searches the trie for the most frequently occurring word and copies it into the string variable passed to the function, str. If you are calling this function yourself, you should create the str char array beforehand, and it should be (at least) long enough to hold the string that will be written to it. (For this, you can use MAX_CHARACTERS_PER_WORD from TriePrediction.h.) If we call this function manually when testing your code,
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