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

int main(int argc, char *argv[]){
    unsigned int u = atoi(argv[1]);
    printf("%u %x\n",u,u);
    int count = 0;
    
    unsigned int mask = 0x80000000;
    for(int i = 0; i < 32; i++){
        if(mask &u){
            count++;
        }
        mask = mask >> 1;
    }

    printf("Has %d bits set\n",count);
    return 0;
}