Question 5 13 Points Write a function called "ReplaceALL" that accepts two parameters: a matrix of 20x10 elements of type integer and an integer value x. The function must: Replace every positive mattix element by the value +1, and Replace every negative matrix element by the value -1, and Replace every zero by the value x. Use the editor to format your answer Question 6 1 Point In C++, which of the following objects need to be used in order to open a file for reading purpose only? A iostream B ifstream Cofstream Diomanip