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
    Packet val;
    val.start=buffer[0];
    val.command=buffer[1];
    val.data=(buffer[2]|buffer[3]<<8);
    val.crc=buffer[4];
    val.end=buffer[5];

    printf("Start: %d\nCommand: %d\nData: %d\nCRC: %d\nEnd: %d\n",val.start,val.command,val.data,val.crc,val.end);
}

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