I’m having a hard time figuring out why this code won’t run. Can somebody help? I am trying to print all the information about the Phone objects with the info function which calls the operator<< for the device part of the phone object, but I’m pretty sure the issue lies in the way I redefined the operator<< for the Device class.

Device class:

template<typename T>
std::ostream& operator<<(std::ostream& output_stream, Device<T> const& device) {

    output_stream << device.brand << std::endl;
    for (size_t i = 0; i < APPS_SIZE - 1; i++)
    {
        output_stream << device.apps[i];
    }

    return output_stream;
}

Phone class:

template<typename T>
void Phone<T>::info() const {
    const Device<T>& device_part = *this;
    std::cout << device_part;
    std::cout << this->price;
}

main method:

#include "phone.hpp"
#include "device.hpp"

int main() {

    char brand[41] = "Generic Brand";
    char apps[30]  = "App1, App2, App3";
    Phone<char> phone(12.1, brand, apps);

    phone.info();

    return 0;
}

I tried asking chatgpt and looking up some info on my lecturer’s presentation presentation on templates but I couldn’t figure anything out. It’s not an issue with my compiler either so it’s either some really dumb mistake but I’d love it if anyone can help me fix it!