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=0xA5;
    *(buffer+1)=command;
    *(buffer+2)=value & 0xFF;  //LSB
    *(buffer+3)=value>>8 & 0xFF; //MSB
    *(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++){
        if(i>0)
            printf(" ");
        printf("%d",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