Validate Configuration Register Layout

Code

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

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    uint16_t count=0;
    uint16_t temp=cfg->reg & (1<<0);
    if(temp==1){

        uint16_t temp1=cfg->reg & (3<<2);
        if(temp1!=3){
            for(int i=4; i<=15;i++){
                if((cfg->reg & (1<<i))==0){
                    count++;
                }
            }
            
        }
    }
    if(count==12){
        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