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 en = (cfg->reg &0x1);
    int mode = ((cfg->reg>>1 )&0x1);
    int prio = ((cfg->reg>>2 )&0x3);
    int res = ((cfg->reg>>4 )&0xFFF);
    if(en==1 && prio!=3 && res==0) return 1;
    return 0;
}

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

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

    return 0;
}