Задачі
Черга з захистом від помилок
на информатиксе эта же задаче заходит успешно, в чем проблема, можете подсказать?
include <iostream>
include <queue>
include <string>
using namespace std;
class Queue { private: queue<int> q;
public: void push(int item) { q.push(item); cout << "ok" << endl; }
void pop() {
if (!q.empty()) {
cout << q.front() << endl;
q.pop();
} else {
cout << "error" << endl;
}
}
void front() {
if (!q.empty()) {
cout << q.front() << endl;
} else {
cout << "error" << endl;
}
}
void size() {
cout << q.size() << endl;
}
void clear() {
while (!q.empty()) {
q.pop();
}
cout << "ok" << endl;
}
};
int main() { Queue queue;
string command;
int value;
while (cin >> command) {
if (command == "push") {
cin >> value;
queue.push(value);
} else if (command == "pop") {
queue.pop();
} else if (command == "front") {
queue.front();
} else if (command == "size") {
queue.size();
} else if (command == "clear") {
queue.clear();
} else if (command == "exit") {
cout << "bye" << endl;
break;
}
}
return 0;
}
include <iostream>
include <queue>
include <string>
using namespace std;
class Queue { private: queue<int> q;
public: void push(int item) { q.push(item); cout << "ok" << endl; }
void pop() {
if (!q.empty()) {
cout << q.front() << endl;
q.pop();
} else {
cout << "error" << endl;
}
}
void front() {
if (!q.empty()) {
cout << q.front() << endl;
} else {
cout << "error" << endl;
}
}
void size() {
cout << q.size() << endl;
}
void clear() {
while (!q.empty()) {
q.pop();
}
cout << "ok" << endl;
}
};
int main() { Queue queue;
string command;
int value;
while (cin >> command) {
if (command == "push") {
cin >> value;
queue.push(value);
} else if (command == "pop") {
queue.pop();
} else if (command == "front") {
queue.front();
} else if (command == "size") {
queue.size();
} else if (command == "clear") {
queue.clear();
} else if (command == "exit") {
cout << "bye" << endl;
break;
}
}
return 0;
}