Serialized Data Buffer

Code

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

void build_packet(uint8_t command, uint16_t value, uint8_t status, uint32_t checksum) {
    // Your logic to fill buffer
    uint8_t buffer[10];
    buffer[0]= 0xA5;
    buffer[1]= command;
    *(uint16_t*)&buffer[2]= value;
    //buffer[3]= value >>8;
    buffer[4]= status;
    *(uint32_t*)&buffer[5]= checksum;
    // buffer[6]= checksum >>8;
    // buffer[7]= checksum >>16;
    // buffer[8]= checksum >>24;
    buffer[9]= 0x5A;
    // 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;
}

Solving Approach