如何检测字节顺序以保持与iOS的字节顺序一致

#include <stdio.h>

typedef union {
    int i;
    char c[sizeof(int)];
} ByteOrder;

int main() {
    ByteOrder order;
    order.i = 1;
    if (order.c[0] == 1) {
        printf("Little-Endian\n");
    } else {
        printf("Big-Endian\n");
    }
    return 0;
}

#include <stdio.h>

int isLittleEndian() {
    int num = 1;
    return (*(char *)&num == 1);
}

int main() {
    if (isLittleEndian()) {
        printf("Little-Endian\n");
    } else {
        printf("Big-Endian\n");
    }
    return 0;
}

#include <arpa/inet.h>

uint32_t htonl(uint32_t hostlong);
uint16_t htons(uint16_t hostshort);
uint32_t ntohl(uint32_t netlong);
uint16_t ntohs(uint16_t netshort);