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] = *((uint8_t *)&value); 
    buffer[3] = *(((uint8_t *)&value)+1); 
    buffer[4] = status;
    //for(int i = 0 ; i < 4;i++) buffer[5+i] = *(((uint8_t *)&checksum)+i); 
    *((uint32_t *)&buffer[5]) = checksum;
    buffer[9] = 0x5A;
    // 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;
}