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] = (int)0xA5;
    buffer[1] = (int)command;
    buffer[2] = (int)(value&0xFF);
    buffer[3] = (int)(value>>8)&0xFF;
    buffer[4] = (int)status;
    buffer[5] = (int)(checksum)&0XFF;
    buffer[6] = (int)(checksum>>8)&0XFF;
    buffer[7] = (int)(checksum>>16)&0XFF;
    buffer[8] = (int)(checksum>>24)&0XFF;
    buffer[9] = (int)0x5A;

    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