🚀 Is C Really Faster Than C++? Let’s Settle This Once and For All 🧪
- alex d
- May 25
- 1 min read
or decades, developers have debated the performance differences between C and C++. You've probably heard it all before:
“C is faster because it has no abstractions.”“C++ has too much overhead.”“Zero-cost abstractions aren't really zero-cost.”
So we decided to stop speculating and run a benchmark.
🔬 The Setup
We benchmarked three versions of the same function:
A plain C implementation
A C++ version using minimal abstraction
A second C++ version using more modern features
All versions do the same work — but written in their own “idiomatic” style.
Curious about how the numbers shake out?
🎥 Watch the Full Breakdown
If you’d like to see the thought process, code walkthrough, and analysis — we’ve put it all in a short, to-the-point video:
We go through:
What we measured and why
The exact differences between the C and C++ versions
How compiler optimizations factor in
And of course... the final results
🤔 So… Is C Always Faster?
Spoiler: it’s not as simple as you think.Modern C++ compilers are very good at optimization — sometimes good enough to surprise even veteran C developers.
But we’ll let the data speak for itself.
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