#include <stdio.h>
int main (void)

{
        float   eps=0.1, a;
        do {
                eps /= 2;
                a = 1.0 + eps;
                printf ("eps = %f       %e\n", eps, eps);
        }
        while (a != 1.0);
        return 0;
}
/*====OUTPUT su una macchina che rappresenta i float con 4 byte=====
eps = 0.050000  5.000000e-02
eps = 0.025000  2.500000e-02
eps = 0.012500  1.250000e-02
eps = 0.006250  6.250000e-03
eps = 0.003125  3.125000e-03
eps = 0.001563  1.562500e-03
eps = 0.000781  7.812500e-04
eps = 0.000391  3.906250e-04
eps = 0.000195  1.953125e-04
eps = 0.000098  9.765625e-05
eps = 0.000049  4.882813e-05
eps = 0.000024  2.441406e-05
eps = 0.000012  1.220703e-05
eps = 0.000006  6.103516e-06
eps = 0.000003  3.051758e-06
eps = 0.000002  1.525879e-06
eps = 0.000001  7.629395e-07
eps = 0.000000  3.814697e-07
eps = 0.000000  1.907349e-07
eps = 0.000000  9.536743e-08
eps = 0.000000  4.768372e-08
*/