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#include<iostream>
#include<fstream>
#include<cstring>
struct task {
char* name;
char* problem;
int points;
task() : name(nullptr), problem(nullptr), points(0) {}
//task() {
// this->name = nullptr;
// this->problem = nullptr;
// this->points = 0;
//}
void setTaskName(const char* nName) {
delete[] name; // Изтриваме старото име за да избегнем отечка на памет
int length = strlen(nName); // Вземаме дължината на новото име
name = new char[length + 1]; // Заделяме точно колкото памет ни трябва
// Еквивалентно на strcpy, просто копираме символ по символ
for (int i = 0; i < length; i++)
name[i] = nName[i];
name[length] = '\0';
}
// Аналогично с setTaskName
void setTaskProblem(const char* nProblem) {
delete[] problem;
int length = strlen(nProblem);
problem = new char[length + 1];
for (int i = 0; i < length; i++)
problem[i] = nProblem[i];
problem[length] = '\0';
}
void writeToFile(std::ofstream& outFile) const {
int nameLength = strlen(name);
int problemLength = strlen(problem);
outFile.write((const char*)&nameLength, sizeof(nameLength));
outFile.write(name, nameLength);
outFile.write((const char*)&problemLength, sizeof(problemLength));
outFile.write(problem, problemLength);
outFile.write((const char*)&points, sizeof(points));
}
void readFromFile(std::ifstream& inFile) {
int nameLength = 0;
int problemLength = 0;
// Какво ще стане ако не изтрием паметта?
delete[] name;
delete[] problem;
inFile.read((char*)&nameLength, sizeof(nameLength));
name = new char[nameLength + 1];
inFile.read(name, nameLength);
name[nameLength] = '\0';
inFile.read((char*)&problemLength, sizeof(problemLength));
problem = new char[problemLength + 1];
inFile.read(problem, problemLength);
problem[problemLength] = '\0';
inFile.read((char*)&points, sizeof(points));
}
void setPoints(int nPoints) {
points = nPoints;
}
int getPoints() const {
return points;
}
void showTask() const {
std::cout << "Name: " << name << std::endl <<
"Problem to be solved: \n" << problem <<
std::endl << "Points: " << points << std::endl;
}
~task() {
delete[] problem;
delete[] name;
}
};
const int TASKS_COUNT = 3;
struct exam {
task data[TASKS_COUNT];
int minPoints;
exam() : minPoints(0) {}
void setMin(int nMin) {
// Може да си добавите и допълнителна валидация.
minPoints = nMin;
}
int getMaxPoints() const {
int result = 0;
for (int i = 0; i < TASKS_COUNT; i++)
result += data[i].getPoints();
return result;
}
void writeToFile(const char* filePath) const {
std::ofstream outFile(filePath, std::ios::binary);
if (!outFile)
return;
for (int i = 0; i < TASKS_COUNT; i++)
data[i].writeToFile(outFile);
}
void readFromFile(const char* filePath) {
std::ifstream inFile(filePath, std::ios::binary);
if (!inFile)
return;
for (int i = 0; i < TASKS_COUNT; i++)
data[i].readFromFile(inFile);
}
void showTasks() const {
for (int i = 0; i < TASKS_COUNT; i++)
data[i].showTask();
}
};
int main() {
exam OOP;
OOP.data[0].setTaskName("First task");
OOP.data[0].setTaskProblem("Easy problem");
OOP.data[0].setPoints(0x19);
OOP.data[1].setTaskName("Second task");
OOP.data[1].setTaskProblem("Another easy problem");
OOP.data[1].setPoints(0x19);
OOP.data[2].setTaskName("Third task");
OOP.data[2].setTaskProblem("Solvable problem");
OOP.data[2].setPoints(0x19);
OOP.setMin(0x4b);
std::cout << "What we created: " << std::endl;
OOP.showTasks();
// Saving to file
OOP.writeToFile("data.bat");
exam cloneOOP;
cloneOOP.readFromFile("data.bat");
std::cout << std::endl << "What we read: " << std::endl;
cloneOOP.showTasks();
}
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