Why C is faster than CPP?

No, it’s not . There seems to be a pervasive assumption that the abstractions of high-level languages make them slower, but this isn’t always true. C++ was designed with high performance in mind. The better abstractions of C++ actually allow idiomatic C++ code to run significantly faster than idiomatic C code.5 Ağu 2017

C++ and C can generate exactly the same speed code. The difference is, C++ has more libraries and some of the library implementations can be much faster or much slower than the equivalent C only version of the code .

First, C++ is intrinsically stingy with memory (unlike Java objects, a C++ struct has no memory overhead if there are no virtual functions [modulo word alignment issues]). Smaller things run faster due to caching, and are also more scalable.

Performance-based on Nature Of Language C++ language is an object-oriented programming language, and it supports some important features like Polymorphism, Abstract Data Types, Encapsulation, etc. Since it supports object-orientation, speed is faster compared to the C language .