add: 14_file_handling

Author: webwithaman

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+  "files.associations": {
+    "fstream": "cpp"
+  }
+}

14_file_handling/00_questions.txt

@@ -4,11 +4,11 @@
 🟢 Topic ➡ File Handling
 
 
-01. Write a C++ program to create a file and print “File created successfully” and throw an error if file is not created.
+01. Write a C++ program to create a file and print “File created successfully”,otherwise display "Unable to Create a File".
 
 02. Write a C++ program to read a text file and count the number of characters in it.
 
-03. Write a C++ program to open an output file 'a.txt' and append data to it.
+03. Write a C++ program to open a file 'output.txt' and append data to it.
 
 04. Write a program to copy the contents of one text file to another while changing the case of every alphabet.
 

14_file_handling/01_create_file/01_create_file.cpp

@@ -1,4 +1,4 @@
-// // Write a C++ program to create a file and print “File created successfully” and throw an error if file is not created.
+// // Write a C++ program to create a file and print “File created successfully”,otherwise display "Unable to Create a File"
 
 // // Header files
 #include <iostream>

14_file_handling/03_append_data/03_append_data.cpp

@@ -0,0 +1,39 @@
+// // Write a C++ program to open a file 'output.txt' and append data to it.
+
+// // Header files
+#include <iostream>
+#include <fstream>
+
+// // use namespace
+using namespace std;
+
+int main()
+{
+    // // specify file name
+    const char *fileName = "output.txt";
+    const char *appendData = "Cpp Programming";
+
+    // // create an instance of ofstream
+    ofstream fout;
+
+    // // open file for writing, if file not exist it will be created
+    fout.open(fileName, ios::app);
+
+    // // check if the file is successfully opened
+    if (!fout.is_open())
+    {
+        cout << "\n!!! Unable to Open File...\n";
+        return 1;
+    }
+
+    // // write data in file using insertion operator
+    fout << appendData;
+
+    cout << "\nData Appended Successfully..." << endl;
+
+    // // close file
+    fout.close();
+
+    cout << endl; // Add new line
+    return 0;
+}

14_file_handling/03_append_data/output.txt

@@ -0,0 +1 @@
+We Are Learning

README.md

@@ -19,6 +19,7 @@ The repository is structured based on different topics, with each topic having i
 - /11_new_and_delete
 - /12_overloading_overriding_constructor_in_inheritance
 - /13_virtual_function_and_abstract_class
+- /14_file_handling
 
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