Lab #4: File I/O and String Functions

In this lab, you will practice simple C++ string operations and C++ file input and output.
Here is a list showing what you need to learn:

• File Input and Output
  • Prepare your input files
  • Use <fstream> variables in your program
  • Produce the output file
• String Operations
  • Using .length() and .size() functions
  • Using .find() and .substr() functions
  • Using string operators to copy and combine strings