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 tmpreg = cfg->reg;
    unsigned short priority = (tmpreg >> 2) & 0x03;

    if(((tmpreg & 1) && (priority != 0x03) && !((tmpreg) & 0xFFF0) )){
        return 1;
    }
    
    return 0;
}

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

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

    return 0;
}