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("%u ", 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;
}