Compilare: user.cpp: In function ‘int main()’: user.cpp:18:17: warning: format ‘%s’ expects argument of type ‘char*’, but argument 2 has type ‘char (*)[11]’ [-Wformat=] scanf("%s ",&s); ^ user.cpp:13:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("raci.in","r",stdin); ^ user.cpp:14:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("raci.out","w",stdout); ^ user.cpp:15:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d ",&n,&k); ^ user.cpp:18:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s ",&s); ^