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];
    uint8_t mask = 0xFF;
    buffer[0] = 0xA5; buffer [9]= 0x5A; buffer [1]= command;
    buffer [2]= (value)& mask; buffer [3]= (value >>8)& mask; // value
    buffer [4] = status;
    buffer [8] = (checksum >> 24)& mask;
    buffer [7]=(checksum >> 16)& mask;
    buffer [6]=(checksum >> 8)& mask;
    buffer [5]=(checksum >> 0)& mask;

    // Your logic to fill buffer
    // Then print buffer
    for (int i = 0; i < 10; i++) {
        printf("%d ", buffer[i]);
    }

}

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;
}