Validate Configuration Register Layout

Code

#include <stdio.h>
#include <stdbool.h>
#include <stdint.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    
    unsigned short reg = cfg->reg;
    bool isEnableOn      = (bool) (1&reg);
    reg = reg>>2;

    if(isEnableOn && (reg<3))
    {
        return 1;
    }

    else
    {
        return 0;
    }

    
}

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

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

    return 0;
}

Solving Approach