Compilare: user.cpp: In function ‘char get_char()’: user.cpp:20:21: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(ch[ BUF[pozbuf] ]) ^ user.cpp: In function ‘void afis(int)’: user.cpp:43:13: warning: array subscript has type ‘char’ [-Wchar-subscripts] af[++af[0]]=back[x]; ^ user.cpp:47:12: warning: array subscript has type ‘char’ [-Wchar-subscripts] af[++af[0]]=back[x%12]; ^ user.cpp: In function ‘char get_char()’: user.cpp:17:23: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(BUF,SBUF,1,in); ^ user.cpp: In function ‘int main()’: user.cpp:57:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&p,&n); ^