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lecture_materials:week_00 [2025-08-18 22:07] – Jeffrey Bergaminilecture_materials:week_00 [2025-08-22 12:59] (current) – Jeffrey Bergamini
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 === raii.cpp (illustrating the concept of RAII) === === raii.cpp (illustrating the concept of RAII) ===
  
-<file cpp scopes_annotated.cpp [enable_line_numbers=true]>+<file cpp raii.cpp [enable_line_numbers=true]>
 /** /**
  * @file raii.cpp  * @file raii.cpp
Line 163: Line 163:
   std::ifstream othello{"/srv/datasets/shakespeare-othello.txt"};   std::ifstream othello{"/srv/datasets/shakespeare-othello.txt"};
   std::cout << "Othello: " << count_vowels(othello) << '\n';   std::cout << "Othello: " << count_vowels(othello) << '\n';
-  // std::cout is just a plain input stream:+  // std::cin is just a plain input stream:
   std::cout << "std::cin: " << count_vowels(std::cin) << '\n';   std::cout << "std::cin: " << count_vowels(std::cin) << '\n';
   // Lifetimes of `hamlet` and `othello` end here.   // Lifetimes of `hamlet` and `othello` end here.
Line 186: Line 186:
  */  */
  
-#include <cctype>    // `std::isprint()` +#include <cctype>    // for `std::isprint()` 
-#include <fstream>   // `std::ifstream` +#include <fstream>   // for `std::ifstream` 
-#include <iostream>  // `std::cout`+#include <iostream>  // for `std::cout`
  
 +/**
 + * `main()` can have parameters to access *command-line arguments* and *environment variables*.
 + *
 + * @param argc argument count: the number of command-line arguments (including the executable name)
 + * @param argv argument values: an array of C strings containing the command-line arguments
 + */
 int main(int argc, char **argv) { int main(int argc, char **argv) {
 +  // Exit with an error message if command-line arguments weren't provided:
 +  if (argc < 3) {
 +    std::cerr << "Usage: " << argv[0] << " FILE1 FILE2\n";
 +    return 1;  // nonzero exit status reports unsuccessful termination to the shell
 +  }
 +  // Attempt to open the two files specified as command-line arguments:
   std::ifstream f1(argv[1]);   std::ifstream f1(argv[1]);
   std::ifstream f2(argv[2]);   std::ifstream f2(argv[2]);
-  // TODO: Find all the printable characters unique present in one file and not the other. +  if (!f1 || !f2) { 
-  // Print each unique character and its ASCII number, one character per line, in ascending order.+    std::cerr << "Cannot read from input file(s)\n"; 
 +    return 2; 
 +  } 
 +  // TODO: Find all the unique printable characters present in one file and not the other. 
 +  // Print each unique character and its ASCII encoding, one character per line, in ascending order.
 } }
 </file> </file>
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 ===== Wednesday ===== ===== Wednesday =====
  
-TBD+{{ :lecture_materials:ai.pdf |Daria Malysheva: How AI Chatbots Work (High-Level Principles)}}
  
 ===== Thursday ===== ===== Thursday =====
  
-TBD+{{ :lecture_materials:thursday_cs_career_paths_presentation.pdf |Computer Science Career Paths 
 +& Programming Languages Guide}}
  
 ===== Friday ===== ===== Friday =====
  
-TBD+{{ :lecture_materials:friday_wrap_up.pdf |Some ideas of how to keep growing in CS and C/C++}}
lecture_materials/week_00.1755580024.txt.gz · Last modified: by Jeffrey Bergamini