c - 如何修复“格式指定类型'char *'但参数具有类型'char **'”错误

Question

我正在设置一个客户端套接字系统，除了引用 server_response 的部分之外，所有的代码都会生成。我正在关注一个教程，但评论中的其他人似乎没有这个问题。是什么导致了这个错误，我该如何解决？

我正在学习本教程大约一半时遇到了这个错误，并且评论或视频中没有解决这个问题。 https://www.youtube.com/watch?v=LtXEMwSG5-8

int network_socket;
network_socket = socket(AF_INET, SOCK_STREAM, 0);  

//Address structure that holds access info for socket
struct sockaddr_in server_address;
server_address.sin_family = AF_INET; //specifies family or type of address, in this case an internet based one
server_address.sin_port = htons(13001); //specifies port
server_address.sin_addr.s_addr = INADDR_ANY;

//specifies socket, address point and the size of the address we are trying to connect to
//we save it as an int as if the connection is good it will return 0 if not it will be -1
int connection_status = connect(network_socket, (struct sockaddr *) &server_address, sizeof(server_address));
//checks for any error
if(connection_status == -1){
    printf("There was an error connecting to the remote socket\n\n\n");
    return 1;
}
//checks socket for any data size 250 chars long
char* server_response[300];
recv(network_socket, &server_response, sizeof(server_response), 0);

//prints data we get back
printf("server says:%s", server_response);
//closes socket
close(network_socket);
return 0;

}

标签： carraysstringsockets

Answer 1

char* server_response[300];
//  ^

这里不应该有*。它应该是一个 300 个字符的数组。这样sizeof(server_response)，下一行将计算为 300，recv()并将从套接字读取多达 300 个字节。