Compilare: user.cpp: In function ‘void read()’: user.cpp:20:25: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[50]’ [-Wformat=] scanf("%d\n%s",&N,&S); ^ user.cpp:20:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%s",&N,&S); ^ user.cpp: In function ‘int main()’: user.cpp:94:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsiruri2.in", "r", stdin); ^ user.cpp:95:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("subsiruri2.out", "w", stdout); ^