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) {
    int i = 0;
    uint8_t buffer[10];
    uint16_t* value_ptr = (uint16_t* )&buffer[2];
    uint32_t* checksum_ptr = (uint32_t *)&buffer[5];
    buffer[0] = 0xA5;
    buffer[1] = command;
    *value_ptr = value;
    buffer[4] = status;
    *checksum_ptr = checksum;
    buffer[9] = 0x5A;
    
    for (i = 0; i < 10; ++i)
    {
        printf("%lu ", (unsigned int )buffer[i]);
    }
    printf("\n");
    // 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;
}