Compilare: main.cpp: In function 'int main()': main.cpp:28:9: warning: variable 'lastlast' set but not used [-Wunused-but-set-variable] int lastlast = 0; ^~~~~~~~ main.cpp:10:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("movedel.in","r",stdin); ^ main.cpp:11:38: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("movedel.out","w",stdout); ^