int main() { int num; printf("0: ActiveDia and send 3E 80\n"); printf("1: ActiveDia don't send 3E 80\n"); printf("2: Read ECU version\n"); printf("3: program ECU\n"); printf("4: send command\n"); int Dia_status=0; int sock; Config config; config=loadjsonfile_tcpsetting("/home/pi/Cdaima/ipConfig.json"); printf("target_ip: %s\n", config.tcp_setting.target_ip); Queue queue; initQueue(&queue); ECUresponse_buffer ECUss[200]; while(1) { printf("请输入一个数字："); if (scanf("%d", &num) != 1) { // 对用户的输入进行错误处理 printf("输入错误！\n"); return 1; } if (num < 0 || num > 4) { // 对输入的数字进行范围判断 printf("输入的数字超出范围！\n"); return 1; } else if (num ==0) { if (Dia_status==0) { sock=1; sock=creat_tcp_connect(config.tcp_setting.target_ip,config.tcp_setting.target_port); if(sock>0){Dia_status=1;} /* if (sock>0) { Dia_status=1; printf("输入的数字超出范围！\n"); pthread_t queque_datahandle; printf("输入的数字超出范围！\n"); ThreadArgs_queue args = {sock, queue, ECUss,Dia_status}; printf("输入的数字超出范围！\n"); int ret = pthread_create(&queque_datahandle, NULL, queque_txdatahandle, &args); printf("输入的数字超出范围！\n"); if (ret != 0) { printf("pthread_create error: %d\n", ret); return -1; } printf("Main thread.\n"); pthread_join(queque_datahandle, NULL); }*/ } } printf("您输入的数字是：%d\n", num); } return 0; } 上面的代码运行时发生了段错误 是什么原因 （执行TCP连接那个函数会）