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#include <iostream>
#include <cstdint>
 
void print_line(uint64_t y, uint64_t x)
{
    while (x)
    {
        std::cout << " *"[x & 1];
        x >>= 1;
	x += ((y & 1) << 63);
	y >>= 1;
    }
 
    std::cout << '\n';
}
 
int main()
{
    uint64_t x = 1;
    uint64_t y = 0;
    do
    {
        print_line(y,x);
	y ^= ((x & (1 << 63)) == 0 ? 0 : 1) + (y << 1);
        x ^= x << 1;
    } while (x + y!= 1);
}
 

In file included from /usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4/cstdint:40,
                 from prog.cpp:2:
/usr/lib/gcc/i686-pc-linux-gnu/4.3.4/include/g++-v4/c++0x_warning.h:36:2: error: #error This file requires compiler and library support for the upcoming ISO C++ standard, C++0x. This support is currently experimental, and must be enabled with the -std=c++0x or -std=gnu++0x compiler options.
prog.cpp: In function ‘int main()’:
prog.cpp:24: warning: left shift count >= width of type

Standard output is empty