add: cpp-programming-questions

Author: webwithaman

.vscode/settings.json

@@ -1,5 +1,6 @@
 {
   "files.associations": {
-    "fstream": "cpp"
+    "fstream": "cpp",
+    "*.tcc": "cpp"
   }
 }

14_file_handling/02_read_file_and_cout_chars/02_read_file_and_cout_chars.cpp

@@ -14,13 +14,13 @@ int main()
     const char *fileName = "read.txt";
 
     // // create an instance of ifstream for reading from a file
-    ifstream fcin;
+    ifstream fin;
 
     // // open file for reading
-    fcin.open(fileName, ios::in);
+    fin.open(fileName, ios::in);
 
     // // check if the file is successfully opened
-    if (!fcin.is_open())
+    if (!fin.is_open())
     {
         cout << "\nError: Unable to Open File..." << endl;
         return 1;
@@ -30,28 +30,14 @@ int main()
     char ch;         // to store character
     int counter = 0; // to count characters
 
-    // // get one character from file
-    ch = fcin.get();
-
-    if (fcin.eof())
-        cout << "\nFile is Empty...";
-    else
-        cout << "\n>>>>>>>>> Following is the Content Read From File <<<<<<<<<<\n";
-
-    while (!fcin.eof()) // run till the end of the file
-    {
-        cout << ch; // display read character
-        counter++;  // increment counter
-
-        // // get one character from file
-        ch = fcin.get();
-    }
+    while (fin.get(ch)) // run till the end of the file
+        counter++;      // increment counter
 
     // // display number of characters
     cout << "\n\nNumber of Characters in File => " << counter << endl;
 
     // // close file
-    fcin.close();
+    fin.close();
 
     cout << endl; // Add new line
     return 0;

14_file_handling/04_copy_file/04_copy_file.cpp

@@ -14,23 +14,23 @@ int main()
     const char *destinationFile = "destination.txt";
 
     // // create an instances of fstream for both reading and writing in a file
-    fstream fcout, fcin;
+    fstream fout, fin;
 
     // // open file for reading
-    fcin.open(sourceFile, ios::in);
+    fin.open(sourceFile, ios::in);
 
     // // check if the file is successfully opened
-    if (!fcin.is_open())
+    if (!fin.is_open())
     {
         cout << "\nError: Unable to Open Source File...\n";
         return 1;
     }
 
     // // open file for writing
-    fcout.open(destinationFile, ios::out);
+    fout.open(destinationFile, ios::out);
 
     // // check if the file is successfully opened
-    if (!fcout.is_open())
+    if (!fout.is_open())
     {
         cout << "\nError: Unable to Open or Create Destination File...\n";
         return 1;
@@ -42,7 +42,7 @@ int main()
     do
     {
         // // read one character from file
-        ch = fcin.get();
+        ch = fin.get();
 
         // // if character in uppercase, then convert it in lowercase and vice-versa
         if (ch >= 'A' && ch <= 'Z')
@@ -51,14 +51,14 @@ int main()
             ch -= 32;
 
         // // if not reached to the end of file
-        if (!fcin.eof())
-            fcout << ch;
+        if (!fin.eof())
+            fout << ch;
 
-    } while (!fcin.eof());
+    } while (!fin.eof());
 
     // // close files
-    fcout.close();
-    fcin.close();
+    fout.close();
+    fin.close();
 
     // // file copied successfully
     cout << "\nFile Content Successfully Copied..." << endl;

14_file_handling/05_merge_two_files/05_merge_two_files.cpp

@@ -15,23 +15,23 @@ int main()
     const char *mergedFile = "merged_file.txt";
 
     // // create an instances of fstream for both reading and writing in a file
-    fstream fcout, fcin;
+    fstream fout, fin;
 
     // // open file1 for reading
-    fcin.open(file1, ios::in);
+    fin.open(file1, ios::in);
 
     // // check if the file is successfully opened
-    if (!fcin.is_open())
+    if (!fin.is_open())
     {
         cout << "\nError: Unable to Open File1...\n";
         return 1;
     }
 
     // // open file for writing
-    fcout.open(mergedFile, ios::out);
+    fout.open(mergedFile, ios::out);
 
     // // check if the file is successfully opened
-    if (!fcout.is_open())
+    if (!fout.is_open())
     {
         cout << "\nError: Unable to Open or Create New Merged File...\n";
         return 1;
@@ -43,45 +43,45 @@ int main()
     do
     {
         // // read one character from file
-        ch = fcin.get();
+        ch = fin.get();
 
         // // if not reached to the end of file
-        if (!fcin.eof())
-            fcout << ch;
+        if (!fin.eof())
+            fout << ch;
 
-    } while (!fcin.eof());
+    } while (!fin.eof());
 
     // // close file1
-    fcin.close();
+    fin.close();
 
     // // open file2 for reading
-    fcin.open(file2, ios::in);
+    fin.open(file2, ios::in);
 
     // // check if the file is successfully opened
-    if (!fcin.is_open())
+    if (!fin.is_open())
     {
         cout << "\nError: Unable to Open File1...\n";
         return 1;
     }
 
     // // add space in merged file
-    fcout << " ";
+    fout << " ";
 
     // // read characters from file2 one by one and write in merged file
     do
     {
         // // read one character from file
-        ch = fcin.get();
+        ch = fin.get();
 
         // // if not reached to the end of file
-        if (!fcin.eof())
-            fcout << ch;
+        if (!fin.eof())
+            fout << ch;
 
-    } while (!fcin.eof());
+    } while (!fin.eof());
 
     // // close files
-    fcout.close();
-    fcin.close();
+    fout.close();
+    fin.close();
 
     // // files merged successfully
     cout << "\nContent of the Files Merged Successfully..." << endl;

14_file_handling/05_merge_two_files/merged_file.txt

@@ -0,0 +1,81 @@
+// // Write a C++ program that counts the total number of characters, words and lines in the file.
+
+// // Header files
+#include <iostream>
+#include <fstream>
+
+#define WORD_SIZE 50
+
+// // use namespace
+using namespace std;
+
+int main()
+{
+
+    // // specify file name
+    const char *fileName = "read.txt";
+
+    // // create an instance of ifstream for reading from a file
+    ifstream fin;
+
+    // // open file for reading
+    fin.open(fileName, ios::in);
+
+    // // check if the file is successfully opened
+    if (!fin.is_open())
+    {
+        cout << "\nError: Unable to Open File..." << endl;
+        return 1;
+    }
+
+    // // read file character by character and count the characters, words and lines
+    char ch; // to store character
+    int charCounter = 0, wordCounter = 0, lineCounter = 0;
+    char word[WORD_SIZE]; // to store word extracted from file
+
+    // // get one character from file
+    ch = fin.get();
+
+    if (fin.eof())
+        cout << "\nFile is Empty...";
+    else
+    {
+        cout << "\n>>>>>>>>> Following is the Content Read From File <<<<<<<<<<\n";
+        lineCounter++;
+    }
+
+    while (!fin.eof()) // run till the end of the file
+    {
+        cout << "\ntell g => " << fin.tellg();
+
+        cout << ch;    // display read character
+        charCounter++; // increment charCounter
+
+        // // if new line character occurs
+        if (ch == '\n')
+            lineCounter++;
+
+        // // get one character from file
+        ch = fin.get();
+    }
+
+    cout << "\ntell g => " << fin.tellg();
+
+    fin.seekg(1);
+
+    cout << "\ntell g => " << fin.tellg();
+
+    while (fin >> word) // run till the end of the file
+        wordCounter++;
+
+    // // display number of characters,words and lines
+    cout << "\n\nNumber of Characters in File => " << charCounter << endl;
+    cout << "Number of Words in File => " << wordCounter << endl;
+    cout << "Number of Lines in File => " << lineCounter << endl;
+
+    // // close file
+    fin.close();
+
+    cout << endl; // Add new line
+    return 0;
+}

14_file_handling/06_count_chars_words_lines/06_count_chars_words_lines.cpp

@@ -0,0 +1 @@
+aman kaum

14_file_handling/06_count_chars_words_lines/06_count_chars_words_lines.exe

@@ -0,0 +1,50 @@
+// // Write a C++ program that counts the total number of characters, words and lines in the file.
+
+// // Header files
+#include <iostream>
+#include <fstream>
+
+// // use namespace
+using namespace std;
+
+int main()
+{
+
+    // // specify file name
+    const char *fileName = "read.txt";
+
+    // // create an instance of ifstream for reading from a file
+    ifstream fin;
+
+    // // open file for reading
+    fin.open(fileName, ios::in);
+
+    // // check if the file is successfully opened
+    if (!fin.is_open())
+    {
+        cout << "\nError: Unable to Open File..." << endl;
+        return 1;
+    }
+
+    // // read file character by character and count the characters, words and lines
+    char ch; // to store character
+    int counter = 0;
+
+    while (!fin.eof()) // run till the end of the file
+    {
+        cout << ch; // display read character
+        counter++;  // increment charCounter
+
+        // // get one character from file
+        ch = fin.get();
+    }
+
+    // // display number of characters,words and lines
+    cout << "\n\nNumber of Characters in File => " << counter << endl;
+
+    // // close file
+    fin.close();
+
+    cout << endl; // Add new line
+    return 0;
+}