Compilare: user.cpp: In function ‘void Update(char*)’: user.cpp:32:23: warning: array subscript has type ‘char’ [-Wchar-subscripts] j = tab[ s[i] ]; ^ user.cpp: In function ‘int main()’: user.cpp:100:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d %d %d %d\n",&N,&K,&W,&D); ^ user.cpp:105:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%s",s); ^ user.cpp: In function ‘void Write()’: user.cpp:66:22: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] int i,j,cost,now,x; ^