Exercise 2

Six Lines File I/O Exercise

Copy the following code and use the name ex2_readline.cpp in your Visual Studio or other IDEs: // 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; }
Create the input file ex2_input.txt in the Visual Studio project or in another IDE with the following content:
```
    
Allan Smith
John Cooper
Zhang Hua
Yao Ming
    
```

Edit the input data file ex2_input.txt and the program file ex2_readline.cpp in Visual Studio.
- Add your full name and your CS110 lab 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.

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.
Upload the above files in the UR Courses.
Call your lab instructor for marking.