Compilare: user.cpp: In function ‘int main()’: user.cpp:73:37: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(vf1>0&&pr[s[i]]<=pr[a[vf1]]){ ^ user.cpp:73:49: warning: array subscript has type ‘char’ [-Wchar-subscripts] while(vf1>0&&pr[s[i]]<=pr[a[vf1]]){ ^ user.cpp: In function ‘void calcul()’: user.cpp:25:15: warning: ‘rez’ may be used uninitialized in this function [-Wmaybe-uninitialized] b[vf2]=rez; ^