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| #include <cstdlib>
#include <iostream>
#include <cstdlib>
#include <stdio.h>
#include <string.h>
#include <math.h>
#define br printf("\n")
double cast_int(float nombre)
{ double fractpart, intpart;
fractpart = modf (nombre , &intpart);
return (intpart);
}
double cast_fract(float nombre)
{ double fractpart, intpart;
fractpart = modf (nombre , &intpart);
return (fractpart);
}
int main ()
{float nombre;
double verif,intpart,fractpart ;
char frac[100];
char buffer [10];
char afficher[16];
int x=0,i=0,j=0,exp = 0;
int choix = 0;
int i_Afficher = 0;
printf("Entrer le nombre\t");
scanf("%f",&nombre);
if (nombre>0)afficher[i_Afficher]='0';
else{ afficher[i_Afficher]='1'; nombre = -nombre;}
intpart=cast_int(nombre);
fractpart=cast_fract(nombre);
/***************************/
i_Afficher = 6;
j=(int)intpart;
itoa (j,buffer,2);
printf ("binary: %s",buffer);
if (j>0) choix = 0 ; // partie entier n'est pas Null
else choix = 1; // partie entier est pas Null
/***************************/
printf(",");
/*************************/
while (fractpart != 0)
{
fractpart= fractpart * 2;
verif= cast_int(fractpart);
// printf("%lf",verif);
if (verif == 1)
{ frac[x]='1';
x++;
fractpart = cast_fract(fractpart);
//printf("%lf\t",result);
}
else {frac[x]='0';
//fractpart = cast_fract(fractpart);
x++;}
}
for (i = 0 ; i < x ; i++)
{
printf("%c", frac[i]);
}br;
/*************************/
if (choix == 0)
{
int stop = 0;
exp = 0;
i = 1;
while (i_Afficher <16 && stop == 0 && i<10)
{ if (buffer[i] == '1') afficher[i_Afficher] = '1';
else if (buffer[i] == '0') afficher[i_Afficher] = '0';
else {stop = 1; i_Afficher --;exp --;}
i++; i_Afficher ++; exp ++;}
//ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
stop = 0;
i=0;
while (i_Afficher <16 && stop == 0 && i<100)
{ if (frac[i] == '1') afficher[i_Afficher] = '1';
else if (frac[i] == '0') afficher[i_Afficher] = '0';
else {stop = 1; i_Afficher --;}
i++; i_Afficher ++;}
//ttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt
}
else
{
i = 0;
exp =0;
int stop = 0;
while (stop == 0 && i<100)
{ if (frac [i] == '0'){exp ++;i++;}
else if (frac[i] == '1'){exp ++; i++; stop = 1;}
else stop = 1;
}
stop = 0;
while (i_Afficher <16 && stop == 0 && i<100)
{ if (frac[i] == '1') afficher[i_Afficher] = '1';
else if (frac[i] == '0') afficher[i_Afficher] = '0';
else {stop = 1; i_Afficher --;}
i++; i_Afficher ++;}
exp = -exp;
}
while (i_Afficher <16){
afficher[i_Afficher] = '0';
i_Afficher ++;
}
j=0;
i=0;
char t_Exp [10];
exp = exp + 15;
j=(int)exp;
itoa (j,t_Exp,2);
if(j<=15)
{
for(i=4;i>0;i--)
{
t_Exp[i] = t_Exp[i-1];
}
t_Exp[0]='0';
t_Exp[5]='\0';
}
j=0;
for (i=1;i<6;i++)
{
afficher[i] = t_Exp[j];
j++;
}
afficher [16] = '\0';
printf("\n Afficher = %s\n exp = %d\n" , afficher, exp);
system("pause");
} |
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