Compilare: user.cpp: In function ‘int main()’: user.cpp:18:15: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[s[i]] ++; ^ user.cpp:19:18: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[s[i]] == 1) nrd ++; ^ user.cpp:22:19: warning: array subscript has type ‘char’ [-Wchar-subscripts] v[s[j]] --; ^ user.cpp:23:22: warning: array subscript has type ‘char’ [-Wchar-subscripts] if(v[s[j]] == 0) ^ user.cpp:14:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d %d\n",&z,&c); ^ user.cpp:15:19: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fgets(s,NR,in); ^ user.cpp:34:14: warning: ‘sfarsit’ may be used uninitialized in this function [-Wmaybe-uninitialized] s[sfarsit+1] =0; ^ user.cpp:35:31: warning: ‘initial’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(out,"%s",s+initial); ^ user.cpp:27:9: warning: ‘maxim’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(i - j + 1 > maxim) ^