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];

    // Your logic to fill buffer
    // Then print buffer
    *(buffer)=0xa5;
    *(buffer+1)=command;
    *(buffer+2)=value&0xff;
    *(buffer+3)=(value>>8)&(0xff);
    *(buffer+4)=status;
    *(buffer+5)=checksum&0xff;
    *(buffer+6)=(checksum>>8)&(0xff);
    *(buffer+7)=(checksum>>16)&(0xff);
    *(buffer+8)=(checksum>>24)&(0xff);
    *(buffer+9)=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