A Modern C++ Tour

Compile with gcc/clang, understand the toolchain, and write your first C++20 program.

Beginner

Key PointsCompile iostream code with g++ -std=c++20; build real projects with CMake.

C++

#include <iostream>

int main() {
    std::cout << "Hello, BackendWiki!\n";
    return 0;
}

Bash

g++ -std=c++20 -O2 -Wall main.cpp -o app
./app

C++ has no package manager in the standard; use vcpkg or Conan for third-party libraries.

C++

#include <iostream>

int main() {
    std::cout << "Hello, BackendWiki!\n";
    return 0;
}

Bash

g++ -std=c++20 -O2 -Wall main.cpp -o app
./app

C++ 没有官方包管理器；第三方库用 vcpkg 或 Conan。

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