CPP

infinity c++

#include <limits>

// ...

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

cpp infinity

size_t INF_SPECIAL = ((size_t) ~0); // generates all 1's

int INF_INT = std::numeric_limits<int>::max(); // #include <limits>
double INF_DOUBLE = std::numeric_limits<double>::infinity();

infinity C++

#include <limits>

// ...

int a = std::numeric_limits<int>::infinity();