Validate Configuration Register Layout

#include <stdio.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    unsigned short r = cfg -> reg;
    if(((r & 1) == 1 ) && ((r >> 2) & 0b11) != 0b11 && ((r >> 4) == 0)){
        return 1;
    }





    return 0;
}

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

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

    return 0;
}