[2sem]pb 16

2sem/programming basics/16/100.cpp

@@ -0,0 +1,114 @@
+// pb_16_100.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+#include <cstring>
+#include <vector>
+#include <algorithm>
+
+using namespace std;
+
+enum scholarship {
+    HI_ED = 0, SC_ED = 1, SV_RD = 2
+};
+
+struct DB_record {
+    char surname[32];
+    unsigned short age;
+    char city[32];
+    scholarship scs;
+
+    bool operator < (const DB_record& rhs) const {
+        string l = string(surname);
+        transform(l.begin(), l.end(), l.begin(), [](unsigned char c){ return tolower(c); });
+        string r = string(rhs.surname);
+        transform(r.begin(), r.end(), r.begin(), [](unsigned char c){ return tolower(c); });
+        return l < r;
+    }
+};
+
+vector<DB_record> parseDB(ifstream &ifs);
+
+int main() {
+    string path_in = "in.txt"; // путь до входного файла
+    string path_out = "out.bin"; // путь до выходного файла
+
+    ifstream ifs(path_in);
+    ofstream ofs(path_out, ios::binary);
+    if (!ifs.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    vector<DB_record> records = parseDB(ifs);
+    for (auto record : records) {
+        ofs.write(reinterpret_cast<char*>(&record), sizeof(record));
+    }
+
+    ifs.close();
+    ofs.close();
+
+    vector<DB_record> records_fb;
+    ifstream binfs(path_out, ios::binary);
+    while (!binfs.eof() && !binfs.fail()) {
+        DB_record record{};
+        binfs.read(reinterpret_cast<char*>(&record), sizeof(record));
+        if (record.age == 0) {
+            continue;
+        }
+        records_fb.push_back(record);
+    }
+    sort(records_fb.begin(), records_fb.end());
+    for (auto record : records_fb) {
+        cout << record.surname << endl;
+        cout << "\tAge: " << record.age << endl;
+        cout << "\tCity: " << record.city << endl;
+        cout << "\tScholarship: ";
+        switch (record.scs) {
+            case HI_ED:
+                cout << "higher";
+                break;
+            case SC_ED:
+                cout << "secondary";
+                break;
+            case SV_RD:
+                cout << "secondary vocational";
+                break;
+        }
+        cout << endl;
+    }
+
+    return 0;
+}
+
+vector<DB_record> parseDB(ifstream &ifs) {
+    vector<DB_record> out;
+    while (!ifs.fail() && !ifs.eof()) {
+        DB_record record{};
+        ifs >> record.surname;
+        ifs >> record.age;
+        ifs >> record.city;
+        {
+            string comp_str;
+            ifs >> comp_str;
+            if (comp_str[0] == '"') {
+                string sub_comp_str;
+                ifs >> sub_comp_str;
+                comp_str += " " + sub_comp_str;
+            }
+            if (comp_str == "higher") {
+                record.scs = HI_ED;
+            }
+            else if (comp_str == "secondary") {
+                record.scs = SC_ED;
+            }
+            else if (comp_str == "\"secondary vocational\"") {
+                record.scs = SV_RD;
+            }
+        }
+        out.push_back(record);
+    }
+    return out;
+}
+