↩ 🔵 🔵 🔵 ❪֎ₛₜ❫ C++ Standard Library ○ ❪֎ₐ;❫ C++ Standard Streams ○ ﹤iostream﹥ ⚬ᶜᵖᵖ std∶∶cerr ⚬ᶜᵖᵖ std∶∶cout ⚬ᶜᵖᵖ