NF05 TD02

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

void exo7()
{
    //Convert binary to decimal
    int n;
    printf("Entrer un nombre en binaire.\n");
    scanf("%d", &n);
    int old_n = n;

    int decimalNumber = 0, i = 0, temp;
    while(n != 0)
    {
        temp = n%10;
        n /= 10;
        decimalNumber += temp*pow(2, i);
        i++;
    }

    printf("%d in decimal is %d\n\n", old_n, decimalNumber);

    printf("Entrer un nombre decimal entier.\n");
    scanf("%d", &decimalNumber);
    int old_dec = decimalNumber;

    i = 1, n = 0;
    while(decimalNumber != 0)
    {
        temp = decimalNumber%2;
        decimalNumber /= 2;
        n += temp * i;
        i *= 10;
    }

    printf("%d in binary is %d", old_dec, n);
}

void exo8()
{
    int decimal, octal = 0, i = 0, temp;

    printf("Entrer un nombre decimal entier.\n");
    scanf("%d", &decimal);

    printf("%d in octal is ", decimal);

    while(decimal != 0)
    {
        temp = decimal%8;
        decimal /= 8;
        octal += temp*pow(8, i);
        i++;
    }

    printf("%d", octal);
}

int main()
{
    exo8();
    return 0;
}