45. Serialized Data Buffer

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

void build_packet(uint8_t command, uint16_t value, uint8_t status, uint32_t checksum) {
    uint8_t buffer[10];
    printf("%hhu %hhu ", 165, command);
    printf("%hhu %hhu %hhu ", (value & 255), ((value >> 8) & 255), status);
    printf("%hhu %hhu %hhu %hhu ", (checksum & 255), ((checksum >> 8) & 255), 
    ((checksum >> 16) & 255), ((checksum >> 24) & 255));
    printf("%hhu", 90);
}

int main() {
    uint8_t cmd, status;
    uint16_t val;
    uint32_t crc;

    scanf("%hhu %hu %hhu %u", &cmd, &val, &status, &crc);
    build_packet(cmd, val, status, crc);
    return 0;
}