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 temp = cfg->reg;
    unsigned char x = ((temp & 0xC) >> 2); 
    unsigned short y = temp & 0xFFF0;
    
    if(((temp & 1) == 1) && (x != 3) && (y == 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