Function ShowUsage

phxqueue_phxrpc/test/test_producer_echo_main.cpp:26–32

extern char *program_invocation_short_name;

void ShowUsage(const char *program) {
    printf("\n");
    printf("Usage: %s\n", program);
    printf("\n");

    exit(0);
}

void GenRandomString(char *s, const int len) {
    static const char alpha_num[] =