77. Validate Configuration Register Layout

#include <stdio.h>
#include <cstdint>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    if((((cfg->reg)&0x0001)==1)&&(((cfg->reg)&0x000C)!=0x000C)&&(((cfg->reg)&0xFFF0)==0x0000)){
        return 1;
    }
    else{
        return 0;
    }


}

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

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

    return 0;
}