[wruza]

Why do you focus on "performance" here?

[pineaux]

Presumably because C = performance?

Although I think it really depends on how you structure your program.

[pjmlp]

Indeed, a programming language can't do wonders when the authors did not pay attention to algorithms and data structures.

[tialaramex]

Yeah. Many reasons your program might be too big or too slow still apply to C.