PPP3 C++ Practice

This repository contains my C++ practice programs while studying Programming: Principles and Practice Using C++ by Bjarne Stroustrup, Third Edition.

The setup is designed for C++23 examples using GNU GCC on macOS, including support for PPP3's import std;, PPP.h, and PPP_support.h.

Repository organization

Chapter work belongs in folders named chNUM:

ch1/   # Chapter 1
ch2/   # Chapter 2
ch3/   # Chapter 3

PPP support files stay at the repository root and are shared by all chapter folders:

PPP.h
PPP.cxx
PPP_support.h
PPPheaders.h
scripts/pppgcc

Example Chapter 1 files:

ch1/hello.cpp
ch1/name.cpp
ch1/README.md

Build chapter programs from the repository root:

gcc ch1/hello.cpp
./hello

gcc ch1/name.cpp
./name

Why this setup exists

PPP3's support header uses modules:

import PPP;

That means a program such as ch1/name.cpp needs the already-built module artifacts:

• gcm.cache/std.gcm and std.o for import std;
• gcm.cache/PPP.gcm and PPP.o for import PPP;

The scripts/pppgcc wrapper automates the build and link flags needed for these files.

First-time shortcut setup

From the repository root:

mkdir -p ~/bin
cp scripts/pppgcc ~/bin/pppgcc
chmod +x ~/bin/pppgcc
echo 'alias gcc="$HOME/bin/pppgcc"' >> ~/.zshrc
source ~/.zshrc
type gcc

After that, this should work for normal PPP3 exercises:

gcc ch1/name.cpp
./name

PPP module source

PPP.cxx intentionally starts with:

module;
#include <cstddef>

export module PPP;
export import std;

The global module fragment gives PPP_support.h access to size_t without placing #include <cstddef> inside PPP_support.h.

More detail

See docs/PPP3_GCC_MODULES.md for the detailed troubleshooting notes from the macOS/GCC setup.