what's the error here??

Question

https://code.sololearn.com/ckUR7NKtnl8x/?ref=app

Answer 1

You didn't have an empty constructor declared. complex res will not work.

Use this instead:
complex res(c1.real + c2.real, c1.img + c2.img);

Also, you return a local reference and cause memory leak. In the declaration and the definition of sum return complex instead of complex&.

BTW, sum() can can cause potential bug because it accept 2 lvalue arguments, Allowing you to modify the arguments when in reality, you just want to get sum and not intend to modify them. Consider use const complex& so you don't get a copy while exists no modification potential.

Answer 2

Martin Taylor ty

Answer 3

CarrieForle ty

Answer 4

Martin Taylor still giving same error.

Answer 5

Sometimes our device is giving blank space when we do it on moblile

Which causes a problem

like system. out. println
which should be system.out.println
😊