#include<stdio.h>
#include<stdlib.h>
#include<math.h>
/* file e-mat.c */

int main(int argc, char* argv[]){
     int ee;
     double mantissa;
     double parte_int;
     double parte_dec;
     double nd, nd2; 

     if(argc < 2){
             printf("Use the format mat.x <double>\n");
             exit (1);
     }
     nd = atof(argv[1]); 
     printf("%f e' compreso tra %f e %f \n",nd,floor(nd),ceil(nd));
     mantissa = frexp(nd, &ee);
     printf("%f = %f * 2^%d \n", nd, mantissa, ee);
     nd2 = ldexp(mantissa, ee); // double ldexp(double num, int exp )
     printf("Per conferma, %f = %f * 2^%d \n", nd2, mantissa, ee);
     parte_dec = modf(nd,&parte_int);
     printf("%f = %f + %f \n", nd, parte_int, parte_dec);
     printf("Il cubo di %f e' %f \n",nd,pow(nd,3));
     return 0;}