Answer Happy

INSERT DESIGN PAGE LAYOUT REFERENCES MAILINGS REVIEW 3. Recursive Fibonacci function. VIEW ACROBAT Fibonacci Sequence 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610,987... Each number is the sum of the previous two numbers. For the above three programs you should have already working programs, you should change the programs so that they take a number from command line as an argument as the user input instead of
For the above three programs you should have already working programs, you should change the programs so that they take a number from command line as an argument as the user input instead of using cin. (validate the input if incorrect, print an error and exit), proceed to run the code printing the output to a file instead of a console. This file should be called in.txt, read the file in.txt and output the data read into another file out.txt.