/*Cuva se n poslednijh bitova, ostalo se postavlja na nulu*/
#include<stdio.h>
unsigned bit(unsigned x,int n);
void stampaj(unsigned x); 
main()
{
int n,x;
unsigned s;
printf("Unesite broj kome zelite da sacuvate
nekoliko poslednjh bitova, a da ostalo postanu nule!\n");
scanf("%d",&x);
printf("Unesite broj bitova\n");
scanf("%d",&n);      
s=bit(x,n);
stampaj(s);
while(1);
}
unsigned bit(unsigned x,int n)
{
unsigned p;
p=~(~0 <<n);
return(x&p);
}
void stampaj(unsigned x) 		 
{ 		 
int wl = sizeof(unsigned)*8; 		 
unsigned mask; 		 
for (mask = 1<<wl-1; mask; mask >>=1) 	 	 
if(x&mask) printf("1");
else printf("0"); 		 
putchar('\n'); 		 
}