Compilare: user.cpp: In function ‘int main()’: user.cpp:174:29: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d\n", p); ^ user.cpp:144:13: warning: unused variable ‘inserted’ [-Wunused-variable] int inserted = 0; ^ user.cpp: In function ‘char nextch()’: user.cpp:13:36: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf, BUF_SIZE, 1, fi); ^