even Archives - Łukasz Podkalicki

How to check the integer is even or odd in C/C++?

2022-01-012022-02-09 by Łukasz Podkalicki

I assume, that you know what even and odd numbers are from a math perspective. However, I will refresh this knowledge just in a single sentence for a buddies who overslept that math lesson. An even number is an integer that is exactly divisible by 2 while odd number is any integer (not a fraction) … Read more

Bit-level operations – check integer is even or odd

2018-12-292019-01-25 by Łukasz Podkalicki

In this short article I will exaplain how to use bit-level operations to verify that integer is even or odd. It’s very useful and fast verification. Examples below have been compiled and tested using gnu-gcc. $/> gcc example.c -o example CHECK EVEN To verify that integer is even we need to check first bit is not set. #include <stdint.h> #include <assert.h> … Read more