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];

    // Your logic to fill buffer
    for (int i = 0; i < 10; i++){
        if (i == 0){
            buffer[i] = 165;
        } else if (i == 9){
            buffer[i] = 90;
        } else if (i == 1){
            buffer[i] = command;
        } else if (i == 4){
            buffer[i] = status;
        } else if (2 <= i && i <= 3){
            buffer[i] = value & 0xFF;
            value = value>>8;
        } else if (5 <= i && i <= 9){
            buffer[i] = (checksum & 0xFF);
            checksum = (checksum>>8);
        }
    }
    
    // Then print buffer
    printf("%d", buffer[0]);
    for (int i = 1; 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;
}