77. Validate Configuration Register Layout

#include <stdio.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
unsigned short  on = 0;
unsigned short V_prio = 0;
unsigned short mask = 0;

on = (1 << 0) & cfg->reg;
V_prio = (cfg->reg >> 2) & 0X3;
mask = (cfg->reg >> 4);
if(on == 1 && V_prio != 3){
    return (mask ==0 )? 1 : 0;
}

else{
    return 0;
}
    
}

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

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

    return 0;
}