20-12-23

20-12-23 /dane.txt

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+lkdfjiosadfa
+fjkafijdaof
+fjasifhusai

20-12-23 /ex.1.cpp

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+#include <iostream>
+#include <fstream>
+#include <string>
+
+using namespace std;
+
+int main() {
+    fstream file("./dane.txt", ios::in | ios::out | ios::app);
+    if (!file.is_open()) {
+        cout << "Nie udalo sie otworzyc pliku" << endl;
+        return 1;
+    }
+
+    string line;
+    while (getline(file, line)) {
+        cout << line << endl;
+    }
+
+    file.close();
+}

20-12-23 /ex.2.cpp

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+#include <iostream>
+#include <string>
+#include <fstream>
+#include <vector>
+
+using namespace std;
+
+int main() {
+    fstream file("imona_nazwisko.txt", ios::in | ios::out | ios::app);
+    if (!file.is_open()) {
+        cout << "Błąd otwarcia pliku" << endl;
+        return 1;
+    }
+
+    vector<string> first_names;
+    vector<string> last_names;
+    string firstName, last_name;
+
+    while (file >> firstName >> last_name) {
+        first_names.push_back(firstName);
+        last_names.push_back(last_name);
+    }
+
+    for (int i = 0; i < first_names.size(); i++) {
+        cout << first_names[i] << " " << last_names[i] << endl;
+    }
+}

20-12-23 /ex.3.cpp

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+#include <iostream>
+#include <string>
+#include <fstream>
+#include <vector>
+
+using namespace std;
+
+int main() {
+    fstream file("imona_nazwisko.txt", ios::in | ios::out | ios::app);
+    if (!file.is_open()) {
+        cout << "Błąd otwarcia pliku" << endl;
+        return 1;
+    }
+
+    vector<string> first_names;
+    vector<string> last_names;
+    vector<string> grades;
+    string firstName, last_name, grade;
+
+    while (file >> firstName >> last_name >> grade) {
+        first_names.push_back(firstName);
+        last_names.push_back(last_name);
+        grades.push_back(grade);
+    }
+
+    float sum = 0;
+    for (int i = 0; i < first_names.size(); i++) {
+        cout << first_names[i] << " " << last_names[i] << " " << grades[i] << endl;
+        sum += stof(grades[i]);
+    }
+    cout << "Średnia: " << sum / grades.size() << endl;
+
+    file.close();
+    return 0;
+}

20-12-23 /imona_nazwisko.txt

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+Anna Nowak
+Jan Kowalski
+Maria Wiśniewska
+Piotr Kwiatkowski