View Compilation Error

0_0_29641222_27124.cpp: In function 'int main()':
0_0_29641222_27124.cpp:19:41: error: lvalue required as unary '&' operand
             scanf("%lf %lf", &a[i].real(), &a[i].imag());
                                         ^
0_0_29641222_27124.cpp:19:55: error: lvalue required as unary '&' operand
             scanf("%lf %lf", &a[i].real(), &a[i].imag());
                                                       ^
0_0_29641222_27124.cpp:20:45: error: lvalue required as unary '&' operand
         scanf("%lf %lf %lf %lf", &b[0].real(), &b[0].imag(), &b[1].real(), &b[1].imag());
                                             ^
0_0_29641222_27124.cpp:20:59: error: lvalue required as unary '&' operand
         scanf("%lf %lf %lf %lf", &b[0].real(), &b[0].imag(), &b[1].real(), &b[1].imag());
                                                           ^
0_0_29641222_27124.cpp:20:73: error: lvalue required as unary '&' operand
         scanf("%lf %lf %lf %lf", &b[0].real(), &b[0].imag(), &b[1].real(), &b[1].imag());
                                                                         ^
0_0_29641222_27124.cpp:20:87: error: lvalue required as unary '&' operand
         scanf("%lf %lf %lf %lf", &b[0].real(), &b[0].imag(), &b[1].real(), &b[1].imag());
                                                                                       ^