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];
    buffer[0] = (uint8_t)0xA5;
    buffer[1] = (uint8_t)command;
    //Processing the value bytes (2 bytes) into the buffer:
    int tmp1 = (uint8_t) (value & 0xFF);
    int tmp2 = (uint8_t) (value >> 8);
    buffer[2] = tmp1;
    buffer[3] = tmp2;
    buffer[4] = status;
    // Porcessing the value bytes for the Checksum CRC (4 bytes):
    int tmp3 = (uint8_t) (checksum & 0xFF);
    int tmp4 = (uint8_t) (checksum >> 8);
    int tmp5 = (uint8_t) (checksum >> 16);
    int tmp6 = (uint8_t) (checksum >> 24);
    buffer[5] = tmp3;
    buffer[6] = tmp4;
    buffer[7] = tmp5;
    buffer[8] = tmp6;
    // End Byte
    buffer[9] = (uint8_t)(0x5A);
    for (int i=0;i<=9;i++){
        printf("%d ", buffer[i]);
    }
    // Your logic to fill buffer
    // Then print buffer
}

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;
}