Validate Configuration Register Layout

Code

#include <stdio.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;


int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    unsigned short val = cfg -> reg;
    if ((val & 1) && (((val >> 2) & 3) != 3) && ((val >> 4) == 0)) {
        return 1;
    }
    return 0;
}

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

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

    return 0;
}

Solving Approach