Validate Configuration Register Layout

Code

#include <stdio.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg)
{
    unsigned short value = (*cfg).reg;
    if((value & 0x0001) != 0)
    {
        unsigned short pri = ((value >> 2) & 0x03);
       // printf("en\n");
        if(pri != 0x03)
        {
            //printf("pp\n");
            if((value & 0xfff0) == 0)
            {
                //printf("bits\n");
                return 1;
            }
            else
            {
                return 0;
            }
        }
        else
           return 0;
    }
    else
            return 0;
}

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

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

    return 0;
}

Solving Approach