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A problem with overloading the >> operator for a custom array class

Nov 25, 2017 at 9:13pm
Syrian Lucianos (6)
Hello everyone.
i'am making a simple class for dynamic arrays in C++:


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#include <iostream>
using namespace std;

template<class T>
class Array {
    private:
        T *arr;

    public:
        int length=0;
        Array(int size) {
            length=size;
            arr=new T[length];
        }
        
        void push(T value) {
            arr[length++]=value;
        }

        void pop() {
            length--;
        }

        T operator[](int index) {
            return arr[index];
        }

        //i'am not sure how to implement the >> operator here...
};

int main() {
    int size=4;
    Array<int> arr(size);
    for (int i=0;i<size;i++) {
        cin >> arr[i]; //i don't know how to handle this part...
    }
}
Edit & run on cpp.sh


So as you can see,i need to know how to implement the >> operator to make it handle the custom array elements input.
Thanks in advance.
Last edited on Nov 25, 2017 at 9:54pm
Nov 26, 2017 at 12:55am
ne555 (10692)
T& operator[](int index)
return a reference (not a value), so you can operate on the element.

cin >> arr[i];
you need to differentiate element from container
`arr' is an Array, the container
`arr[i]' is an element, in this case an `int'.
reading an int is known, you don't need to overload operator>>
Last edited on Nov 26, 2017 at 12:56am
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