Sample C++ Code

Simple Programs

• hello.cpp: hello, world
• ave.cpp: print the average of a list of integers
  ave1000.cpp: same, but using arrays; build with g++ -std=c++11 ave1000.cpp
• occurrences.cpp: count number of times a character appears input. If build to a.exe, then

          a.exe < occurrences.cpp
  

  counts 17 semicolons, and

          a.exe _ < occurrences.cpp
  

  counts 5 underscores.
• print-args.cpp: print all command-line arguments (showing how to access them)
• increasing-numbers.cpp: illustrates writing an eof-controlled loop with limits
• distinct1000.cpp: count number of distinct values in the input.
• countvowels.cpp: count the number of vowels; illustrating reading input by characters (and including code to read from a file as well as standard input).

Classes, Pointers, and References

• todo.cpp: simple todo list using fixed-size arrays and strings.
• Todo lists with pointers: a more extensible version of ToDo lists, this time using pointers so each ToDo item has identity.
• ave.h, ave.cpp, printave.cpp: illustrating separate compilation and reference parameters
• simple_vector.h: Simple vector code
• Time example: illustrates simple inheritance
• Account balance: computing account balances, illustrating definitions distributed over multiple files.
• alg-examp.cpp: illustrate algorithm code
• list_iterator.cpp: illustrates iterating over a list

Input and Output

• better_ave.cpp: illustrates reading and writing from streams (rather than cin and cout) and using stringstreams with assert to test.