[Solved] how can I delete the elements of array after read it in C++?

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A couple of killers in the Tableau::delete method:

The function will not compile because of the use of the delete keyword as the function’s name

elements[index+1] will allow reading elements[nbElements] Which may or may not be out of the array’s bounds, but is certainly one more than intended.

Try instead:

template <class T> 
void Tableau<T>::remove(size_t index) // size_t is unsigned and prevents input of 
                                      // negative numbers. One less test required.
                                      // nbElements should also be made unsigned to match
                                      // function name changed to something legal.
{   
    assert(index < nbElements); // this also ensures nbElements is > 1 
                                // so nbElements-- will not go out of bounds
    nbElements--; // moved above the loop because the index+1 will grab the last element
    for( ; index < nbElements; index++) // no need to have an i. Index already does this
    {
        elements[index] = elements[index+1];
    }
}

solved how can I delete the elements of array after read it in C++?