[英]' was not declared in this scope' C++
我有一些粗鲁的错误...我在网上搜索了一下,并且能够在任何地方阅读她,但仍然无法解决我的问题...
这是我的主要内容 :
#include <iostream>
#include "SFML/Network.hpp"
#include "decode.hpp"
#include "listOfFunction.hpp"
#include "map.hpp"
void createSocket(){
unsigned short bindPort = 12800;
unsigned short clientPort;
int ret = 0;
sf::UdpSocket socket;
sf::IpAddress clientAddr;
sf::Packet packet;
Map mainMap;
if (socket.bind(bindPort) != sf::Socket::Done){
if (sf::Socket::Error) std::cout << "An unexpected error happened : Fatal Error !" << std::endl;
if (sf::Socket::NotReady) std::cout << "The socket is not ready to send/receive data yet !" << std::endl;
}
while(1){
packet.clear();
socket.receive(packet, clientAddr, clientPort);
std::string header = readFromPacket(packet);
ret = callFunction(packet, header, clientAddr, clientPort, mainMap, socket);
}
}
int main(){
createSocket();
}
这是错误:
错误:未在此范围内声明“ Map”错误:预期为“;”,在“ mainMap”之前错误:未在此范围内声明“ mainMap”错误:未在此范围内声明callFunction
Map.cpp:
#include <iostream>
#include <vector>
#include "SFML/Network.hpp"
#include "map.hpp"
Map::Map(){
char number[5] = "\0";
int m_obstacle[80000] = {0};
std::string m_error = "not error";
std::vector <int> m_posPlayer(0);
std::vector <std::string> m_namePlayer(0);
std::vector <sf::IpAddress> m_addressPlayer(0);
std::string m_stringObstacle = "";
for (int i=0;i<80000;i++){
sprintf(number, "%d", m_obstacle[i]);
m_stringObstacle += std::string(number) + "+";
}
}
int Map::sendMap(sf::IpAddress address, unsigned short clientPort, sf::UdpSocket& socket){
std::string header = "rcv_map";
sf::Packet packet;
packet >> header >> m_stringObstacle;
if(socket.send(packet, address, clientPort)!=sf::UdpSocket::Done){
m_error += "Error sending the packet \n";
}
return 0;
}
int Map::error(){
if (m_error != "not_error"){
std::cout << "here is a following list of errors : " << m_error << std::endl;
}
m_error.erase(0,m_error.length());
}
Map.hpp:
#include <iostream>
#include "SFML/Network.hpp"
#ifndef DECODE_H_INCLUDED
#define DECODE_H_INCLUDED
class Map{
public:
Map();
int sendMap(sf::IpAddress address, unsigned short clientPort, sf::UdpSocket& socket);
int error();
private:
int m_obstacle;
std::vector <int> m_posPlayer;
std::vector <int> m_namePlayer;
std::vector <sf::IpAddress> m_addressPlayer;
std::string m_stringObstacle;
};
#endif // DECODE_H_INCLUDED
该问题可能存在于标题中,但我无法弄清楚。
问题可能与标题有关,但找不到原因。
绝对正确! 您错误地应用了包含防护 。
您使用了错误的hpp文件中的包含防护:
#ifndef DECODE_H_INCLUDED
在map.hpp
它来自decode.hpp
。 它应该是
#ifndef MAP_H_INCLUDED
我认为问题与Map.hpp中的这些宏定义有关
#ifndef DECODE_H_INCLUDED
#define DECODE_H_INCLUDED
似乎它们与在Map.hpp之前包含的decode.hpp中使用的定义相同。
考虑到至少此构造函数是错误的,这是没有意义的,并且不会编译
Map::Map(){
int i = 0;
int m_obstacle[80000] = {0};
std::vector <int> m_posPlayer(0);
std::vector <std::string> m_namePlayer(0);
std::vector <sf::IpAddress> m_addressPlayer(0);
std::string m_stringObstacle = "";
for (i=0;i<80000;i++){
m_stringObstacle += m_obstacle[i] + "+";
}
}
这些本地对象
std::vector <int> m_posPlayer(0);
std::vector <std::string> m_namePlayer(0);
std::vector <sf::IpAddress> m_addressPlayer(0);
std::string m_stringObstacle = "";
不使用。 我认为您是指类数据成员,而不是本地对象。
这句话
m_stringObstacle += m_obstacle[i] + "+";
是错误的,没有道理。
也是数据成员
int m_obstacle;
被声明为标量对象。 您可能不会像数组一样在构造函数中重新声明它。
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