C++ · Intermediate

C++ Foundations

Fifty-six lessons covering types, control flow, functions, vectors, maps, classes, pointers and the standard library, with compiled programs checked against expected output.

56 steps, written for someone starting from zero: the lessons plus a checkpoint quiz task after every ten. Each lesson opens with a starting point you have to change, not the finished answer. Work through it in order and you finish with a program you wrote yourself — the kind of thing you can show in an interview, not a certificate you bought.

56 tasks 6 sections 0 done

Start task 1

Section 1 · First programs

1 Hello, C++ C++ —
2 The main function C++ —
3 Variables and types C++ —
4 Arithmetic C++ —
5 Strings C++ —
6 Conditions C++ —
7 Loops C++ —
8 While loops C++ —
9 Debug your program C++ —
10 Comments and style C++ —

Section 2 · Decisions and repetition

11 Compare numbers C++ —
12 Logical operators C++ —
13 Nested if C++ —
14 Counting with a loop C++ —
15 Nested loops C++ —
16 break and continue C++ —
17 Arrays C++ —
18 Loop over an array C++ —
19 Switch C++ —
20 Ternary operator C++ —

Section 3 · Functions

21 Define a function C++ —
22 Return types C++ —
23 Parameters C++ —
24 Pass by reference C++ —
25 Default arguments C++ —
26 Recursion C++ —
27 Function overloading C++ —
28 Use functions to reuse code C++ —
29 Test a function C++ —
30 Build a small library C++ —

Section 4 · Collections and data

31 std::vector C++ —
32 Vector indexing C++ —
33 Loop over a vector C++ —
34 Structs C++ —
35 Vector of structs C++ —
36 Sum a column C++ —
37 Count matching rows C++ —
38 Find the largest C++ —
39 Sort a vector C++ —
40 Maps C++ —

Section 5 · Objects and real programs

41 Classes C++ —
42 Member functions C++ —
43 Constructors C++ —
44 Pointers C++ —
45 References vs pointers C++ —
46 Check the input C++ —
47 Format money C++ —
48 A fee report C++ —
49 Two students, one comparison C++ —
50 Your first C++ project C++ —

Capstone: structs, maps and errors

Final exam and certificate

Twenty questions from the whole track. Pass mark is 60%. Retakes are free and the best score is the one printed on your certificate.

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