将下面代码转化为python:#include <iostream> using namespace std; int main(int argc, char *argv[]) { typedef struct { char name[11]; char born[9]; char num[18]; }message; int n; cin >> n; message *m = new message[n]; for (int i = 0; i < n; i++) { cin >> m[i].name; cin >> m[i].born; cin >> m[i].num; } message tmp; while (n > 1) { for (int i = 0; i < n - 1; i++) { if (strcmp(m[i].born, m[i + 1].born)>0) { tmp = m[i]; m[i] = m[i + 1]; m[i + 1] = tmp; } } n--; } for (int i = 0; i < 3; i++) { cout << m[i].name << " " << m[i].born << " " << m[i].num << endl; } delete[]m; return 0; }
时间: 2024-01-24 19:01:46 浏览: 126
```python
# -*- coding: utf-8 -*-
n = int(input())
class Message:
def __init__(self):
self.name = ""
self.born = ""
self.num = ""
m = [Message() for i in range(n)]
for i in range(n):
m[i].name, m[i].born, m[i].num = input().split()
tmp = Message()
while n > 1:
for i in range(n-1):
if m[i].born > m[i+1].born:
tmp = m[i]
m[i] = m[i+1]
m[i+1] = tmp
n -= 1
for i in range(3):
print(m[i].name, m[i].born, m[i].num)
```
相关问题
class ClassImpl { public: virtual void testRangeBasedFor() { std::vector<int> vec = { 1, 2, 3, 4, 5 }; for (auto item : vec) { [&]() { std::cout << item << std::endl; }; } } }; class Test1 : public ClassImpl { public: void test(const char* data) { std::cout << "test1" << std::endl; } }; typedef std::vector<void(ClassImpl::*)(const char*)> CImpl; int main(int argc, char* argv[]) { CImpl vec_impl; vec_impl.push_back(&Test1::test); return 0; }
在给定的代码中,存在一些问题。下面是对代码进行修正的版本:
```cpp
#include <iostream>
#include <vector>
class ClassImpl {
public:
virtual void testRangeBasedFor() {
std::vector<int> vec = { 1, 2, 3, 4, 5 };
for (auto item : vec) {
// 使用 lambda 表达式来输出每个元素
[&]() {
std::cout << item << std::endl;
}();
}
}
};
class Test1 : public ClassImpl {
public:
void test(const char* data) {
std::cout << "test1" << std::endl;
}
};
typedef void (ClassImpl::*MemberFuncPtr)(const char*);
int main(int argc, char* argv[]) {
std::vector<MemberFuncPtr> vec_impl;
vec_impl.push_back(&Test1::test);
// 使用示例:调用 vec_impl 中的成员函数指针
Test1 obj;
(obj.*vec_impl[0])("data");
return 0;
}
```
修正后的代码中,将 `typedef` 的类型别名 `CImpl` 改为 `MemberFuncPtr`,表示成员函数指针类型。同时,在 `main` 函数中,将 `vec_impl` 声明为存储 `MemberFuncPtr` 的向量,并使用 `push_back` 将 `&Test1::test` 添加到向量中。
注意,在调用成员函数指针时,需要通过对象指针或对象引用进行调用。在示例中,创建了一个 `Test1` 对象 `obj`,并使用 `(obj.*vec_impl[0])` 来调用 `vec_impl` 中存储的成员函数指针。
请注意,代码示例仅用于演示目的,并考虑到了修复问题和纠正语法错误。实际使用时,可能需要更多的代码和逻辑来实现预期的功能。
帮我修改下面的代码。要求建立一次weboscket链接,链接到wss://autopilot-test.t3go.cn:443/api/v1/vehicle/push/message/LFB1FV696M2L43840,当订阅到感知话题调用perceptionCallback时,通过wss发送serialized_data:#include "ros/ros.h" #include "std_msgs/String.h" #include <boost/thread/locks.hpp> #include <boost/thread/shared_mutex.hpp> #include "third_party/apollo/proto/perception/perception_obstacle.pb.h" #include "t3_perception.pb.h" #include <iostream> #include <websocketpp/config/asio_client.hpp> #include <websocketpp/client.hpp> #include <websocketpp/common/thread.hpp> apollo::perception::PerceptionObstacles perception_obstacles_; typedef websocketpp::clientwebsocketpp::config::asio_tls_client client; void perceptionCallback(const std_msgs::String& msg) { ROS_WARN("t3 perceptionCallback parse"); if (perception_obstacles_.ParseFromString(msg.data)) { double timestamp = perception_obstacles_.header().timestamp_sec(); ROS_INFO("t3 perceptionCallback timestamp %f count:%d", timestamp, perception_obstacles_.perception_obstacle().size()); std::string data; perception_obstacles_.SerializeToString(&data); VehData veh_data; veh_data.set_messagetype(5); veh_data.set_messagedes("PerceptionObstacles"); veh_data.set_contents(data); std::string serialized_data; veh_data.SerializeToString(&serialized_data); } else { ROS_ERROR("t3 perceptionCallback parse fail!"); } } int main(int argc, char **argv) { ros::init(argc, argv, "listener"); ros::NodeHandle n; ros::Subscriber sub = n.subscribe("/perception_node/perception_objects", 1000, perceptionCallback); ros::spin(); return 0; }
好的,这里是修改后的代码:
```c++
#include "ros/ros.h"
#include "std_msgs/String.h"
#include <boost/thread/locks.hpp>
#include <boost/thread/shared_mutex.hpp>
#include "third_party/apollo/proto/perception/perception_obstacle.pb.h"
#include "t3_perception.pb.h"
#include <iostream>
#include <websocketpp/config/asio_client.hpp>
#include <websocketpp/client.hpp>
#include <websocketpp/common/thread.hpp>
using namespace std;
apollo::perception::PerceptionObstacles perception_obstacles_;
typedef websocketpp::client<websocketpp::config::asio_tls_client> client;
void perceptionCallback(const std_msgs::String& msg, client* c) {
ROS_WARN("t3 perceptionCallback parse");
if (perception_obstacles_.ParseFromString(msg.data)) {
double timestamp = perception_obstacles_.header().timestamp_sec();
ROS_INFO("t3 perceptionCallback timestamp %f count:%d", timestamp, perception_obstacles_.perception_obstacle().size());
std::string data;
perception_obstacles_.SerializeToString(&data);
VehData veh_data;
veh_data.set_messagetype(5);
veh_data.set_messagedes("PerceptionObstacles");
veh_data.set_contents(data);
std::string serialized_data;
veh_data.SerializeToString(&serialized_data);
try {
c->send(serialized_data);
} catch (const websocketpp::exception& e) {
ROS_ERROR("t3 perceptionCallback send failed: %s", e.what());
}
} else {
ROS_ERROR("t3 perceptionCallback parse fail!");
}
}
int main(int argc, char **argv) {
ros::init(argc, argv, "listener");
ros::NodeHandle n;
ros::Subscriber sub = n.subscribe("/perception_node/perception_objects", 1000,
boost::bind(&perceptionCallback, _1, new client()));
client* c = sub.getCallbackQueue()->getCallbackThread().get_context<client>();
c->set_access_channels(websocketpp::log::alevel::none);
c->set_error_channels(websocketpp::log::elevel::none);
websocketpp::lib::error_code ec;
client::connection_ptr con = c->get_connection("wss://autopilot-test.t3go.cn:443/api/v1/vehicle/push/message/LFB1FV696M2L43840", ec);
if (ec) {
ROS_ERROR("t3 websocket connection failed: %s", ec.message().c_str());
return 1;
}
c->connect(con);
ROS_INFO("t3 websocket connected");
ros::spin();
return 0;
}
```
主要的修改包括:
1. 将 `websocketpp::clientwebsocketpp::config::asio_tls_client` 改为 `websocketpp::client<websocketpp::config::asio_tls_client>`,因为 `websocketpp` 3.0 版本后改变了类模板的定义。
2. 修改 `perceptionCallback` 函数,将 `serialized_data` 发送到 websocket 服务器。由于该函数是回调函数,需要将 client 指针作为参数传递进去,这里使用 `boost::bind` 来实现。
3. 在 `main` 函数中建立 websocket 连接,并将 client 指针传递给 `perceptionCallback` 函数。注意要将 client 的日志级别设置为 none,以避免输出过多的日志。
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