#include <stdio.h>
int main(int argc, char* argv[])
{
    double x = 10000000;
    double y = 1;

    x = x + y;
    y = x - y;
    x = x - y;

    printf("x=%d, y=%d\n", x, y);
    return 0;
}

x=0, y=1072693248