check-endian.cpp


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#include <cstdlib>
#include <iostream>

using namespace std;

union endian_check
{
    int  number;
    char check;
};

int main(int argc, char** argv)
{
    endian_check _check;
    _check.number = 1;

    // Check the valu of the least significant byte.
    if (_check.check)
        cout << "little endian" << endl;
    else
        cout << "big endian" << endl;

    return EXIT_SUCCESS;
}