Six Lines File I/O Exercise (To be marked)

Given the following files:

• Use ex2_readline.cpp in the replit team project or copy the following code into your IDE: // Program ex2_readline.cpp demonstrates how to read a line of text from a file #include <iostream> #include <fstream> #include <string> using namespace std; int main() { string str1, str2, str3, str4; // declares 4 variables ifstream inData; // declares input stream ofstream outData; // declares output stream inData.open("ex2_input.txt"); // binds program variable inData to the input file "ex2_input.txt" outData.open("ex2_output.txt"); // binds program variable outData to the output file "ex2_output.txt" // input 4 lines getline(inData,str1); getline(inData,str2); getline(inData,str3); getline(inData,str4); // output 4 lines outData << str4 << endl; outData << str3 << endl; outData << str2 << endl; outData << str1 << endl; // outputs 4 lines inData.close(); outData.close(); return 0; }
  
• Use the input file ex2_input.txt provided in the replit team project or create the following in another IDE:

      
  
  Allan Smith
  John Cooper
  Zhang Hua
  Yao Ming
      
  

Do this:

• Edit the input data file ex2_input.txt and the program file ex2_readline.cpp in repl.
  • Add your full name and your CS110 class instructor's name in the input data file ex2_input.txt a line for each.
  • Modify the program ex2_readline.cpp to work with your new input data file.
• Compile and run the program ex2_readline.cpp.
• Check the contents of the output data file.
  • In the replit console you can use this command: cat ex2_output.txt or you can click on the file name in the left panel.
• Compile and run this C++ program.

When you are done:

• Observe the results in ex2_output.txt. Check with your lab instructor if you aren't sure if they are correct.
• Take a screenshot of your IDE and console window after running the program - there should be no output there.
• For this exercise, you will have: ex2_readline.cpp, ex2_input.txt and ex2_output.txt files. Complete all the exercises in this lab before uploading the zip file produced by replit.

I/O file video instructions for our supported Desktop IDEs:

• Visual Studio 2019
• XCode
• Code::Blocks
• repl.it