Progress
0.x#
Tooling, build modes, warnings, language standard, compiler extensions.
1.x#
Basic program structure, variables, initialization, console I/O, expressions, undefined behavior, simple input/output programs.
2.x#
Functions, return values, void, parameters, local scope, forward declarations, multiple files, namespaces, preprocessing, headers, program design.
3.x#
Debugging, reproducing bugs, stepping through code, breakpoints, variable inspection, call stack, refactoring safely.