Serialized Data Buffer

Code

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

void build_packet(uint8_t command, uint16_t value, uint8_t status, uint32_t ch) {
    uint8_t buf[10];
    buf[0] = 0xA5;
    buf[1] = command;
    buf[2] = value & 0x00FF;
    buf[3] =  value>>8 & 0xFF;
    buf[4] = status;
    buf[5] = ch & 0xFF;
    buf[6] = ch>>8 & 0xFF;
    buf[7] = ch>>16 & 0xFF;
    buf[8] = ch>>24 & 0xFF;
    buf[9] = 0x5A;
    for(int i =0;i<10;i++){
        printf("%d ",buf[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