diff options
1 files changed, 1 insertions, 247 deletions
| -rw-r--r-- | pract SI/week3/solution.cpp | 248 |
diff --git a/pract SI/week3/solution.cpp b/pract SI/week3/solution.cpp index e61ea78..e17a56a 100644 --- a/pract SI/week3/solution.cpp +++ b/pract SI/week3/solution.cpp @@ -1,247 +1 @@ -#include<iostream> -#include<fstream> -#include<cstring> - -// Fix problems with strcpy in visual studio -#pragma warning (disable : 4996) - -const int MAX_LENGTH = 25; -const char FILE_PATH[] = "offers-database.txt"; - -// Clear std::cin -void flushStream() { - std::cin.clear(); - std::cin.ignore(255, '\n'); -} - -struct jobOffer { - char name[MAX_LENGTH]; - int peopleCount; - int restDaysCount; - long long salary; -}; - -jobOffer createOffer(char name[MAX_LENGTH], int colCount, int restDays, long long salary) { - jobOffer toReturn; - strcpy(toReturn.name, name); - toReturn.peopleCount = colCount; - toReturn.restDaysCount = restDays; - toReturn.salary = salary; - - return toReturn; -} - -// Read offer from stdin -jobOffer readOffer() { - std::cout << "Enter company name [max " << MAX_LENGTH << " symbols!]: "; - char name[MAX_LENGTH]; - int colCount = 0; - int restDays = 0; - long long salary = 0; - - std::cin.getline(name, MAX_LENGTH, '\n'); - - std::cout << "Add colleague count: "; - - std::cin >> colCount; - std::cout << "Add rest days: "; - std::cin >> restDays; - std::cout << "Add salary: "; - std::cin >> salary; - - flushStream(); - return createOffer(name, colCount, restDays, salary); -} - -void saveOfferToFile(std::ofstream& outFile, const jobOffer& offer) { - /*int size = strlen(offer.name); - outFile.write((const char*)&size, sizeof(int)); - - outFile.write(offer.name, size * sizeof(char)); - - outFile.write((const char*)(&offer.peopleCount), sizeof(offer.peopleCount)); - - outFile.write((const char*)(&offer.restDaysCount), sizeof(offer.restDaysCount)); - - outFile.write((const char*)(&offer.salary), sizeof(offer.salary));*/ - outFile.write((const char*)&offer, sizeof(offer)); -} - -void drawLine(int length) { - for (int i = 0; i < length + 13; i++) - std::cout << '-'; - std::cout << std::endl; -} - -void printOffer(const jobOffer& j) { - int nameLen = strlen(j.name); - drawLine(nameLen); - std::cout << "Company name: " << j.name << - "\nPeople in team: " << j.peopleCount << - "\nRest days: " << j.restDaysCount << - "\nSalary: " << j.salary << std::endl; - drawLine(nameLen); - std::cout << std::endl; -} - -void readOffer(std::ifstream& inFile, jobOffer& toRead) { - /*int length = 0; - inFile.read((char*)&length, sizeof(length)); - inFile.read(toRead.name, length); - toRead.name[length] = '\0'; - - inFile.read((char*)&toRead.peopleCount, sizeof(toRead.peopleCount)); - inFile.read((char*)&toRead.restDaysCount, sizeof(toRead.restDaysCount)); - inFile.read((char*)&toRead.salary, sizeof(toRead.salary));*/ - inFile.read((char*)&toRead, sizeof(toRead)); -} - -void addOffers(const char* filePath, int n) { - std::ofstream outFile(filePath, std::ios::binary | std::ios::app); - - if (!outFile) { - std::cerr << "Problem with oppening file " << filePath; - return; - } - - for (int i = 0; i < n; i++) { - jobOffer toWrite = readOffer(); - saveOfferToFile(outFile, toWrite); - } - - outFile.close(); -} - -void filterOffers(const char* filePath, long long minSalary) { - std::ifstream inFile(filePath, std::ios::binary); - - if (!inFile) { - std::cerr << "Error"; - return; - } - - // Same as !inFile.eof() - while (inFile) { - jobOffer toRead; - readOffer(inFile, toRead); - if (!inFile) - break; - if (toRead.salary >= minSalary) - printOffer(toRead); - } - - inFile.close(); -} - -bool searchOffer(const char* filePath, const char* name) { - std::ifstream inFile(filePath, std::ios::binary); - - if (!inFile) { - std::cerr << "Error"; - return false; - } - - while (inFile) { - jobOffer toRead; - readOffer(inFile, toRead); - if (!inFile) - break; - if (!strcmp(toRead.name, name)) { - inFile.close(); - return true; - } - } - - inFile.close(); - return false; -} - -bool isPerfect(const jobOffer& j, int maxCoworkers, int minVacancyDays, int minSalary) { - return j.peopleCount <= maxCoworkers && j.restDaysCount >= minVacancyDays && j.salary >= minSalary; -} - -void saveOfferToTextFile(std::ofstream& outFile, const jobOffer& j) { - outFile << j.name << " " << j.peopleCount << " " << j.restDaysCount << " " << j.salary << std::endl; -} - -void perfectOffer(const char* filePath, int maxCoworkers, int minVacancyDays, int minSalary) { - std::ifstream inFile(filePath, std::ios::binary); - std::ofstream outFile("perfect.txt", std::ios::app); - - if (!inFile) { - std::cerr << "Error"; - return; - } - - while (inFile) { - jobOffer toRead; - readOffer(inFile, toRead); - if (!inFile) - break; - if (isPerfect(toRead, maxCoworkers, minVacancyDays, minSalary)) - saveOfferToTextFile(outFile, toRead); - } - - inFile.close(); -} - -void printAll(const char* filePath) { - std::ifstream inFile(filePath, std::ios::binary); - - if (!inFile) { - std::cerr << "Error"; - return; - } - - // eq to !inFile.eof() - while (inFile) { - jobOffer toRead; - readOffer(inFile, toRead); - if (!inFile) - break; - printOffer(toRead); - } - - inFile.close(); -} - -void runSystem(const char* filePath = FILE_PATH) { - bool running = true; - while (running) { - char c; - std::cin.get(c); - - switch (c) { - case 'a': - flushStream(); - addOffers(filePath, 1); - break; - case 'f': - long long salary; - std::cin >> salary; - filterOffers(filePath, salary); - break; - case 's': - flushStream(); - char name[MAX_LENGTH]; - std::cin.getline(name, MAX_LENGTH, '\n'); - if (searchOffer(filePath, name)) - std::cout << "Offer exist\n"; - else - std::cout << "No such offer\n"; - break; - case 'q': - running = false; - break; - case 'i': - printAll(filePath); - break; - default: - break; - } - } -} - -int main() { - runSystem(); -} +👀👀👀 |