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 data = cfg->reg;
    bool flag = false;
    flag = ((data & 1) == 1) ? true : false;
    
    data = data >> 2;
    int mask = data & 1;
    data = data >> 1;
    mask = mask << 1;
    mask |= data & 1;
    data = data >> 1;

    flag = (mask != 11) ? true : false;
    flag = (data == 0) ? true : false;  
    return flag==true ? 1 : 0;
}

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

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

    return 0;
}