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ConsoleApplica44444.cpp

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+#include <iostream>
+#include <fstream>
+using namespace std;
+
+int ncd(int a, int b) {
+    return (b == 0 ? a : ncd(b, a % b));
+}
+
+struct Drib {
+    int ch;
+    int zn;
+
+    void init() {
+        cout << "\nInput ch: ";
+        cin >> ch;
+        cout << "Input zn: ";
+        cin >> zn;
+        skor();
+    }
+    void skor() {
+        int d = ncd(ch, zn);
+        if (d != 0) {
+            ch /= d;
+            zn /= d;
+        }
+        
+    }
+    void print() {
+        cout << ch << "/" << zn << endl;
+    }
+};
+
+int main()
+{
+    Drib a;
+    fstream finOut;
+
+    finOut.open("info.dat", ios::binary | ios::out); //ios::out | ios::trunc);
+    if (!finOut.is_open()) {
+        cerr << "\n Error opening file(out)!!\n";
+        system("pause");
+        return 1;
+    }
+    int vUser;
+    do {
+        a.init();
+
+        finOut.write((char*)(&a), sizeof(Drib));
+        cout << "\n Create a fraction?(1/Yes 0/No) ";
+        cin >> vUser;
+    } while (vUser);
+    finOut.close();
+
+    finOut.open("info.dat", ios::binary | ios::in);
+    if (!finOut.is_open()) {
+        cerr << "\n Beta(in)!!\n";
+        system("pause");
+        return 1;
+    }
+    cout << "\nRead fractions in file:\n";
+    finOut.read((char*)(&a), sizeof(a));
+    while (finOut.good()) {
+        a.print();
+        finOut.read(reinterpret_cast<char*>(&a), sizeof(a));
+    }
+    finOut.close();
+    system("pause");
+}