std::numeric_limits::max — cppreference.com

Original:

Returns the maximum finite value representable by the numeric type T. Meaningful for all bounded types.

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Illustre l'utilisation de max () avec certains types fondamentaux et certains typedefs bibliothèque standard (la sortie est spécifique au système)

#include <limits>
#include <cstddef>
#include <iostream>
int main()
{
    std::cout << "short: " << std::dec << std::numeric_limits<short>::max()
              << " or " << std::hex << std::showbase << std::numeric_limits<short>::max() << '\n'
              << "int: " << std::dec << std::numeric_limits<int>::max()
              << " or " << std::hex << std::numeric_limits<int>::max() << '\n' << std::dec
              << "streamsize: " << std::dec << std::numeric_limits<std::streamsize>::max()
              << " or " << std::hex << std::numeric_limits<std::streamsize>::max() << '\n'
              << "size_t: " << std::dec << std::numeric_limits<std::size_t>::max()
              << " or " << std::hex << std::numeric_limits<std::size_t>::max() << '\n'
              << "float: " << std::numeric_limits<float>::max()
              << " or " << std::hexfloat << std::numeric_limits<float>::max() << '\n'
              << "double: " << std::defaultfloat << std::numeric_limits<double>::max()
              << " or " << std::hexfloat << std::numeric_limits<double>::max() << '\n';
}

short: 32767 or 0x7fff
int: 2147483647 or 0x7fffffff
size_t: 18446744073709551615 or 0xffffffffffffffff
streamsize: 9223372036854775807 or 0x7fffffffffffffff
float: 3.40282e+38 or 0x1.fffffep+127
double: 1.79769e+308 or 0x1.fffffffffffffp+1023