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) {
    // Overlay struct and print values
    uint16_t data = *(buffer+2)  |  *(buffer+3)<<8;
    printf ("Start: %d\n", *(buffer));
    printf ("Command: %d\n", *(buffer+1));
    printf ("Data: %d\n", data);
    printf ("CRC: %d\n", *(buffer+4));
    printf ("End: %d\n", *(buffer+5));
}
int main() {
    uint8_t buffer[6];
    for (int i = 0; i < 6; i++) {
        scanf("%hhu", &buffer[i]);
    }
    print_packet_fields(buffer);
    return 0;
}