bitwise_pari_disp_tutti a dx

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

void bit_pari_disp(unsigned char a,unsigned *pari,unsigned *disp)
{
    unsigned mask=1,i,c=0;
    *pari=0;
    *disp=0;

    for(i=0;i<(sizeof(unsigned char)*8);i++)
        {

            c=a&mask;
            c=c>>i;
            *pari=*pari|c;
            c=0;
            mask=mask<<1;

            c=a&mask;
            c=c>>(i+1);
            *disp=*disp|c;
            c=0;
            mask=mask<<1;
        }

}

int main()
{
    unsigned char a,*pari,*disp;
    printf("Dimmi il numero: ");scanf("%d",&a);
       printf("%d",a);
    bit_pari_disp(a,&pari,&disp);
    printf("\n\nPari: %d",pari);printf("\n\nDisp: %d\n",disp);

    return 0;
}