Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:48:43: error: unable to find character literal operator ‘operator""and’ with ‘char’ argument while(Sir[i]>='0' and Sir[i]<='9'and i<=N-1) ^ user.cpp:48:50: error: expected ‘)’ before ‘i’ while(Sir[i]>='0' and Sir[i]<='9'and i<=N-1) ^ user.cpp:48:56: error: expected ‘;’ before ‘)’ token while(Sir[i]>='0' and Sir[i]<='9'and i<=N-1) ^ user.cpp:48:51: warning: statement has no effect [-Wunused-value] while(Sir[i]>='0' and Sir[i]<='9'and i<=N-1) ^