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Data-Storage/ifstream-test-for-file-open-errors.cpp

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+//*********************************************
+// This program tests for file open errors.
+//
+// By: JESUS HILARIO HERNANDEZ
+// Last modified: October 12, 2016
+//*********************************************
+#include <iostream>
+#include <fstream>
+using namespace std;
+
+int main()
+{
+    ifstream inputFile;
+    int number;
+
+    // Open the file.
+    inputFile.open("BadListOfNumbers.txt");
+
+    // If the file sucessfully opened...
+    if (inputFile)
+    {
+        // Read the numbers from the file and
+        // display them.
+        while (inputFile >> number)
+        {
+            cout << number << endl;
+        }
+
+        // Close the file.
+        inputFile.close();
+    }
+    // Trailing Else statment
+    else
+    {
+        // Display and error message.
+        cout << "Error opening the file.\n";
+    }
+
+//*********************************************
+// Another example
+//*********************************************
+
+    inputFile.open("ListOfNumbers.txt");
+    if (inputFile.fail())
+    {
+        cout << "Error opening file.\n";
+    }
+    else
+    {
+        // Read the numbers from the file and
+        // display them.
+        while (inputFile >> number)
+        {
+            cout << number << endl;
+        }
+
+        // Close the file.
+        inputFile.close();
+    }
+    return 0;
+}

Data-Storage/ofstream-use-for-loop-to-write-data-to-a-file.cpp

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+//**************************************************
+// This program uses a for loop to write the numbers
+// in increments of 2 within the range of 0 through
+// 1000.
+//
+// By: JESUS HILARIO HERNANDEZ
+// Last modified: October 14, 2016
+//**************************************************
+#include <iostream>
+#include <fstream>
+using namespace std;
+
+int main()
+{
+    // Stream object
+    ofstream outputFile;
+
+    // Open or create file to write to
+    outputFile.open("writenumbersto.txt");
+
+    for (int i = 0; i <= 1000; i += 2)
+    {
+        outputFile << i << endl;
+    }
+    // Display data write complete
+    cout << "Your written file has been written and "
+         << "complete." << endl;
+
+    // Close file
+    outputFile.close();
+    return 0;
+}