Compilare: user.cpp: In function ‘int main()’: user.cpp:80:30: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[50005]’ [-Wformat=] scanf ("%s" , &sir[i]); ^ user.cpp:75:46: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("subsecvente2.in" , "r" , stdin); ^ user.cpp:76:48: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("subsecvente2.out" , "w" , stdout); ^ user.cpp:78:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d" , &n); ^ user.cpp:80:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%s" , &sir[i]); ^