Compilare: main.cpp: In function 'int main()': main.cpp:79:14: warning: unused variable 'put' [-Wunused-variable] int node,put,p,cate; ^~~ main.cpp:79:20: warning: unused variable 'cate' [-Wunused-variable] int node,put,p,cate; ^~~~ main.cpp: In member function 'char Parser::getChar()': main.cpp:16:48: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(str, sizeof(char), SIZE, fin); ^