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--- cplusplus:file_processing_examples [2017/02/08 20:46] – [Filenames must be c_str in pre-C++11] mithat
+++ cplusplus:file_processing_examples [2017/02/08 20:48] – [Reading multiple tokens] mithat
@@ Line 144: / Line 144: @@
 int main()
 {
-    const string filename = "some_numbers.txt";
+    string filename = "some_numbers.txt";
     int num1, num2;
-    ifstream infile;   // instantiate file pointer object
+    ifstream infile;         // instantiate file pointer object
-    infile.open(filename.c_str());   // associate file with file pointer object
+    infile.open(filename);   // associate file with file pointer object
     if (!infile)
-        cerr << "Error opening file." << endl;
-    else
     {
-        cout << "Reading from file ... ";
+        cout << "Error opening file." << endl;
+        return 1;  // exit program with error code
+    }
+    cout << "Reading from file ... ";
-        infile >> num1 >> num2;
+    infile >> num1 >> num2;
-        infile.close();    // close the file!
+    infile.close();    // close the file!
-        cout << "Done!" << endl;
+    cout << "Done!" << endl;
-        cout << "The first two numbers in the file are:" << endl
+    cout << "The first two numbers in the file are:" << endl
-             << num1 << endl
+         << num1 << endl
-             << num2 << endl
+         << num2 << endl
-             << endl;
+         << endl;
-    }
     return 0;