ise RW DVD Backspace 3) Two-Dimensional Arrays a. Declare a two-Dimensional integer array called matrix containing 5 rows and 10 columns b. Set all elements of the array declared above to 255. 4) Strings a. Assign the second character of the string str to a char variable ch (which has already been declared). b. Using a pre-defined String function (discussed in class), assign the first two characters of the string variable str to another string variable called text. (text and sir already exist in your program and are in the same scope)