Using only standard I/O functions (like fopen(), fseek(), ftell(), fgets(), etc.), write a C program to reverse the order of the lines in a text file. That is the first line becomes last, the second line becomes the one before the last one and so on. Note: your program should have two arguments, the input file name and the output file name. Call model: reverseFile Input file: Hello I am happy to see you Output file: I am happy to see you Hello

Write a function called copy_even_lines() that takes two strings (filenames) as input parameters and copies every other line from the first file into the second. That is, counting from 0, it copies the 0th line, the 2nd line, the 4th line, etc. from the first file to the second file. You may assume that both files exist.

Write a C program to print the given X number pattern series .• Your program should ask for a single input – the number, which will be a digit from 1-9 (if the number is not within the range, the program will terminate) o e.g., if the user enters 10, or -1, the program will terminate • Then output the number and in the line below, the corresponding X pattern onto a file. The output filename is ‘CP3out.txt’. Please leave 2 lines in between successive outputs for clarity. Note: • The appearance of the X: your output must match the examples below. • Also note that your code must not hard code the output corresponding to each individual number (1-9) but rather, be general

This is Python Program 5: Improve the file copy program from Lab 9 so that it will make sure the user enters a file that exists. If a file doesn’t exist, the open function will raise the FileNotFoundError. You do not need to check if the destination exists since a file doesn’t need to exist to write it. Instead of copying the content of the source as exact, it only copies non-empty lines and it also prepend each line with a line number. A line is empty if the length of the line stripped of white space from both end is 0. The code segment below shows how to strip white space and getting the length of the string. If the length of the line is zero, the line is a blank line. line1 = " " line2 = " aa " print(len(line1.strip())) # 0 print(len(line2.strip())) # 2 In the sample run, “add.py” is the source file and “add-copy.py” is the destination file. Note that “add-copy.py” contains only non-blank lines from “add.py” and each line in “add-copy.py” is labelled with a line number. Sample run:…