77. Validate Configuration Register Layout

#include <stdio.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    int enable   = (cfg->reg)&0x01;
    int Property = ((cfg->reg)>>2)&0x03;
    int reserved = ((cfg->reg)>>4);
    if(enable==1 && Property!=3 && reserved==0){
        return 1;
    }
    return 0;
}

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

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

    return 0;
}