Compilare: user.cpp: In function ‘int afisare(int)’: user.cpp:11:10: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] f[n] = NULL; ^ user.cpp:14:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:20:9: warning: unused variable ‘aux’ [-Wunused-variable] int aux,j,i,N,S,qnt,rest,pos,nr; ^ user.cpp:20:13: warning: unused variable ‘j’ [-Wunused-variable] int aux,j,i,N,S,qnt,rest,pos,nr; ^ user.cpp:20:30: warning: unused variable ‘pos’ [-Wunused-variable] int aux,j,i,N,S,qnt,rest,pos,nr; ^ user.cpp:20:34: warning: unused variable ‘nr’ [-Wunused-variable] int aux,j,i,N,S,qnt,rest,pos,nr; ^ user.cpp:17:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("noname3.in","r",stdin); ^ user.cpp:18:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("noname3.out","w",stdout); ^ user.cpp:22:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d",&N,&S); ^