Setting an int to Infinity in C++

Question

I have an int a that needs to be equal to \"infinity\". This means that if

int b = anyValue;

a>b is always tru

Answer 1

Integers are inherently finite. The closest you can get is by setting a to int's maximum value:

#include 

// ...

int a = std::numeric_limits::max();

Which would be 2^31 - 1 (or 2 147 483 647) if int is 32 bits wide on your implementation.

If you really need infinity, use a floating point number type, like float or double. You can then get infinity with:

double a = std::numeric_limits::infinity();