79. Extract Packet Fields from Byte Stream

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

typedef struct {
    uint8_t start;
    uint8_t command;
    uint16_t data;
    uint8_t crc;
    uint8_t end;
} Packet;

void print_packet_fields(uint8_t *buffer) {
    
    Packet s1;
 
    s1.start = *(buffer + 0);
    s1.command = *(buffer + 1);
    s1.crc = *(buffer + 4);
    s1.end = *(buffer + 5);
    s1.data = *(buffer + 2) | (*(buffer + 3) << 8);

    printf("Start: %d\n",s1.start);
    printf("Command: %d\n",s1.command);
    printf("Data: %d\n",s1.data);
    printf("CRC: %d\n",s1.crc);
    printf("End: %d\n",s1.end);

}

int main() {
    uint8_t buffer[6];
    for (int i = 0; i < 6; i++) {
        scanf("%hhu", &buffer[i]);
    }
    print_packet_fields(buffer);
    return 0;
}