(a) Write C++ statements to do the following: i. ii. iii. iv. V. vi. Declare an object to read data from a file; Use this object to open a file named x. dat; Read input from x.dat and store it in the previously declared variable x; Declare an object to write data to a file; Use this object to open a file named sqrtx.dat; Calculate the square root of the value of x and output the result to sqrtx.dat. (6 marks) (b) Using the statements from part (a) above, write a C++ program that reads in a list of values for the variable x from x.dat and calculates x, writing the output to sqrtx.dat. Use an appropriate loop, assume x.dat has 100 lines and, if x is negative, set x = 0. Include the appropriate header files in your program. (13 marks)