pb/z13

1sem/programming basics/z13/38.cpp

@@ -0,0 +1,31 @@
+// pb_z13_38.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <fstream>
+
+using namespace std;
+
+void rev_lines(istream &ist, ostream &ost);
+
+int main() {
+    ifstream inf("in.txt");
+    ofstream fout("out.txt", ios::trunc);
+    if (!inf.is_open() || !fout.is_open())
+    {
+        cerr << "Unable to open file" << endl;
+        return 1;
+    }
+
+    rev_lines(inf, fout);
+    return 0;
+}
+
+void rev_lines(istream &ist, ostream &ost) {
+    string out;
+    while (!ist.eof() && ist.good()) {
+        string buf;
+        getline(ist, buf);
+        out.insert(0, buf + "\n");
+    }
+    ost << out.substr(0, out.size()-1);
+}