Why C++ Is Fast
C++ is compiled into machine code before execution. This allows the program to run directly on the system with less runtime overhead compared with interpreted or dynamically typed languages.
How the C++ Compiler Works
The C++ compilation process generally includes preprocessing, compilation, assembly, and linking. The final output is an executable program that can run without interpreting source code line by line.
C++ vs Python
Python is easier and faster to write, but it has higher runtime overhead. C++ gives more control over memory, types, and performance, making it suitable for strict time-limit algorithmic problems.
When Python Can Be Slower
Python can be slower when handling large loops, recursion-heavy problems, intensive numeric computation without optimized libraries, or competitive programming problems with tight execution limits.