77. Validate Configuration Register Layout

#include <stdio.h>
#include <stdint.h>

typedef struct {
    unsigned short reg;
} ConfigRegister;

int validate_config(ConfigRegister *cfg) {
    // Write logic using pointer access
    uint8_t check =0;
    uint8_t checkr =0;
    if(((cfg->reg >> 0) & 0x01) == 0)return 0;
    check = (cfg->reg >> 2) & 0x03;
    if(check == 0x03) return 0;
    for(uint8_t i =4; i < 16; i++){
        checkr = (cfg->reg >> i) & 0x01;
        if(checkr == 1) return 0;
    }
    return 1;
}

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

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

    return 0;
}