C++ please, Direct answer without comment, Only function

13 Points Question 10 . 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 matrix 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 11 In C++, which of the following objects need to be used in order to open a file for writing purpose? A fostream 7 minutes remaining