'+=' operator overloading type not viable

I take

./Mission.h:56:11: note: candidate function not viable: no known conversion from 'Passenger *' to        'const Passenger' for 1st argument; dereference the argument with *          Mission& operator+=(const Passenger &passenger);                   ^  ./Mission.h:58:11: note: candidate function not viable: no known conversion from 'Passenger *' to        'const Astronaut' for 1st argument          Mission& operator+=(const Astronaut &astronaut);  

And I define in header file the overloaded func

Mission& operator+=(const Astronaut &astronaut);  

In func define

Mission& Mission::operator+=(const Astronaut &astronaut){  

implementing

moonMission += astronautList[0];      moonMission += astronautList[1];      moonMission += astronautList[2];  

I define array like this

Astronaut* astronautList[5];  

Why it is not viable? I want to send my pointer array to a overloaded function and array define can't be changed. I only allowed to change overloaded function.

https://stackoverflow.com/questions/67259865/operator-overloading-type-not-viable April 26, 2021 at 09:42AM