Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:111:35: error: ‘strlen’ was not declared in this scope add(&root, word, 0, strlen(word)); ^ user.cpp:115:35: error: ‘strlen’ was not declared in this scope del(&root, word, 0, strlen(word)); ^ user.cpp:119:46: error: ‘strlen’ was not declared in this scope g << countWord(&root, word, 0, strlen(word)) << "\n"; ^ user.cpp:123:50: error: ‘strlen’ was not declared in this scope g << longestPrefix(&root, word, 0, strlen(word)) << "\n"; ^ user.cpp: In function ‘int countWord(TrieNode*, char*, int, int)’: user.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type] } ^