Compilare: user.cpp: In function ‘void insert(nod*)’: user.cpp:43:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(tm->po[in[j]]==NULL) ^ user.cpp:44:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] tm->po[in[j]]=new nod(); ^ user.cpp:45:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] tm->po[in[j]]->tata=tm; ^ user.cpp:46:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] tm->po[in[j]]->ch=in[j]; ^ user.cpp:47:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] tm->po[in[j]]->lv=tm->lv+1; ^ user.cpp:48:24: warning: array subscript has type ‘char’ [-Wchar-subscripts] tm=tm->po[in[j]]; ^ user.cpp: In function ‘int main()’: user.cpp:79:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j,l,x,y,z; ^ user.cpp:79:13: warning: unused variable ‘l’ [-Wunused-variable] int i,j,l,x,y,z; ^ user.cpp:79:15: warning: unused variable ‘x’ [-Wunused-variable] int i,j,l,x,y,z; ^ user.cpp:79:17: warning: unused variable ‘y’ [-Wunused-variable] int i,j,l,x,y,z; ^ user.cpp:79:19: warning: unused variable ‘z’ [-Wunused-variable] int i,j,l,x,y,z; ^ user.cpp:80:11: warning: unused variable ‘tm’ [-Wunused-variable] nod * tm; ^ user.cpp:77:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strigat.in","r",stdin); ^ user.cpp:78:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("strigat.out","w",stdout); ^ user.cpp:82:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d\n",&n,&m); ^ user.cpp:85:19: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(sin[i]+1); ^