77. Validate Configuration Register Layout

#include <stdio.h>

typedef struct {
    unsigned short Enable : 1;
    unsigned short Mode : 1;
    unsigned short Priority : 2;
    unsigned short Reserved : 12;
    
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
   return (((cfg->Reserved & 0xFFF) == 0) && (cfg->Enable) && (cfg->Priority != 0x03));
}

int main() {
    ConfigRegister cfg;
    scanf("%hx", &cfg);

    int result = validate_config(&cfg);
    printf("%d", result);

    return 0;
}