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]=0xA5;
    buffer[1]=command;
    buffer[2]|=(value&0xFF);
    buffer[3]|=((value>>8)&0xFF);
    buffer[4]=status;
    buffer[5]|=(checksum&0xFF);
    buffer[6]|=((checksum>>8)&0xFF);
    buffer[7]|=((checksum>>16)&0xFF);
    buffer[8]|=((checksum>>24)&0xFF);
    buffer[9]=0x5A;
    for(int i=0;i<10;i++)
    {
        printf("%d ",buffer[i]);
    }
    printf("\n");
}

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;
}