45. Serialized Data Buffer

#include <stdio.h>
#include <stdint.h>


int main(){
    uint8_t cmd, sta;
    uint32_t checksum; 
    uint16_t value; 
    scanf("%hhu %hu %hhu %u", &cmd, &value, &sta, &checksum);
    
    uint8_t buffer[10];
    buffer[0] = 0xA5;    // Start
    buffer[1] = cmd;     // Command

    // Gán value (uint16_t) từng byte (little endian)
    buffer[2] = value & 0xFF;         // Low byte
    buffer[3] = (value >> 8) & 0xFF;  // High byte

    buffer[4] = sta;           // Status

    // Gán checksum (uint32_t) từng byte (little endian)
    buffer[5] = checksum & 0xFF;
    buffer[6] = (checksum >> 8) & 0xFF;
    buffer[7] = (checksum >> 16) & 0xFF;
    buffer[8] = (checksum >> 24) & 0xFF; 

    buffer[9] = 0x5A;             // End

    // In từng byte
    for (int i = 0; i < 10; i++) {
        printf("%u ", buffer[i]);
    } 
    return 0;
}