Validate Configuration Register Layout

Code

#include <stdio.h>
#include <stdint.h>
typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    int enable_bit = (((cfg->reg) >> 0)&0x01);
    uint8_t  test =  (((cfg->reg)>>2)&0x03);
    uint16_t test1 = (((cfg-> reg)>>4)&0xfff);
    if((enable_bit == 1) && (test != 3) && (test1 == 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