Compilare: user.cpp: In function ‘int main()’: user.cpp:15:35: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (int i=0;i<12;++i) al[c[i]]=i; ^ user.cpp:20:54: warning: array subscript has type ‘char’ [-Wchar-subscripts] for (int j=4,l=1;j>=0;--j,l*=12) k+=al[aux[j]]*l;++s[k]; ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zimeria.in","r",stdin); ^ user.cpp:13:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n%d\n",&ok,&n); ^ user.cpp:14:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",c); ^ user.cpp:18:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n",aux); ^ user.cpp:22:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zimeria.out","w",stdout); ^