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

int main()
{
    int n = 0x02A3;
    int a = n >> 8;
    printf("%X\n",a);
    int b = n & 0x00FF;
    printf("%X\n",b);
    int c = n & 0x0001;
    printf("%X\n",c);
    int d = n & 0x8000;
    printf("%X\n",d);
    int e = (n & 0xFFF0) >> 4;
    printf("%X\n",e);
    int f = n & 0x000F;
    printf("%X\n",f);
    return 0;
}

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

void rellenar(int nro,char *s){
    unsigned int mascara = 1 << 31;
    for(int i = 0; i < 32;i++){
        s[i] = (nro & mascara) ? '1' : '0';
        mascara >>= 1;
    }
    s[32] = '\0';
    printf("%X = %s",nro,s);
}

int main()
{
    char s[33];
    rellenar(-4367,s);
    return 0;
}

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

int utilizaC2(){
    return (-1 >> 1) == -1;
}

int main()
{
    printf("%d\n",utilizaC2());
    return 0;
}

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

void diasActivos(char s){
    char *semanas[] = {"Sabado","Viernes","Jueves","MIercoles","Martes","Lunes","Domingo"};
    unsigned int mascara = 1 << 6;
    printf("Dias activos:\n");
    for(int i = 0; i < 7;i++){
        if(mascara & s) printf("%s\n",semanas[i]);
        mascara >>= 1;
    }
}

int main()
{
    diasActivos(87);
    return 0;
}