Write a program that reads each line in a file, reverses its characters, and writes the resulting line to another file. Suppose the user specifies input. txt and output. txt when prompted for the file names, and input. txt contains the lines Mary had a little lamb Its fleece was white as snow And everywhere that Mary went the lamb was sure to go. After the program is finished, output. txt should contain bmal elttil a dah yraM wons sa etihw saw eceelf stI tnew yraM taht erehwyreve dnA .og ot erus saw bmal ehT