Home/ Questions/Q 9159779
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-06-17T13:34:35+00:00

I have some small questions about the speed to create and read data in

  • 0

I have some small questions about the speed to create and read data in C/C++:

=> If I need to fill data in a array of any type (think about a 2048*2048 array), using a loop and fill each cell is faster then loading it from a file? (excluding time spent to open and close the file).

=> If have data in a separate file and read it, it costs the same time to read it from the original file? (imagine that I need to fill an array, is better to have this array filled on the main program or I can read without loss from a external file? (excluding the time to open and close the file))

=> Memcpy still fast if I need to copy a lot of data ?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    The file operations will be MANY MANY MANY Times slower than memory operations.

    memcpy is up to the compiler, but yes, in general it will do it quicker or just the same as you could without resorting to assembly.

    • 0