Compilare: user.cpp: In function ‘int main()’: user.cpp:16:9: warning: unused variable ‘j’ [-Wunused-variable] int j, i, nwords, val, last, imax, first; ^ user.cpp:14:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text3.in", "r", stdin); ^ user.cpp:15:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("text3.out", "w", stdout); ^ user.cpp:43:13: warning: ‘imax’ may be used uninitialized in this function [-Wmaybe-uninitialized] i = imax; ^