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) {
    uint8_t buffer[10];
    buffer[0]=(uint8_t) 0xA5;
    buffer[1]=command;
    buffer[2]= (uint8_t)(value & 0xFF);
    buffer[3]=(uint8_t)((value>>8) & 0xFF);
    buffer[4]=status;
    buffer[5]=(uint8_t)((checksum) & 0xFF);
    buffer[6]=(uint8_t)((checksum>>8) & 0x0FF);
    buffer[7]=(uint8_t)((checksum>>16) & 0x0FF);
    buffer[8]=(uint8_t)((checksum>>24) & 0x0FF);
    buffer[9]= (uint8_t)(0x5A);
    for (int i=0;i<10;i++){
        printf("%u ",buffer[i]);
    }
    // Your logic to fill buffer
    // Then print buffer
}

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