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HadiScriptHadiScript
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‎file_handling/appending.cpp‎

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#include <iostream>
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#include <fstream>
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using namespace std;
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int main()
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{
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fstream file("type2.txt", ios::in | ios::out | ios::app);
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if (!file.is_open())
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{
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cout << "error to opening this file";
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}
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else
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{
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cout << "file is open __" << endl;
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cout << "wrting to the file" << endl;
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file << "Lorem ipsum dolor sit amet, consectetur adipiscing elit."<<endl;
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file <<"Ut sed massa erat.Sed quam mauris,"<<endl;
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file << "iaculis cursus nibh.Morbi vel ligula massa.Aenean eget lor"<<endl;
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file.seekg(0);
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cout<<"reading of the file";
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string line;
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while (file.good())
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{
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getline(file, line);
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cout<<line<<endl;
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}
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}
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return 0;
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}
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// ios::app :-
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// by using this function, file will be created if there is no anny file of the same name, actually this function
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// is help us to avoid the use less error
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// ham jitni martaba is code ko run kre gein yw utni dafa hi create ya write kre ga file ko means hamay file me
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// lines ziyada hi milay gi

‎file_handling/appending.exe‎

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‎file_handling/binary_files.cpp‎

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#include <iostream>
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#include <fstream>
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#include <cstring>
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using namespace std;
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int main()
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{
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char input[100];
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strcpy(input, "learning the more");
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fstream file("type.bin", ios::binary | ios::in | ios::out | ios::trunc);
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if (!file.is_open())
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{
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cout << "error" << endl;
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}
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else
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{
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int len = strlen(input);
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for (int i = 0; i < len; i++)
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{
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file.put(input[i]);
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}
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file.seekg(0);
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char ch;
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while (file.good())
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{
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file.get(ch);
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cout << ch;
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}
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}
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return 0;
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}

‎file_handling/binary_files.exe‎

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‎file_handling/copy_file.cpp‎

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#include <iostream>
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#include <fstream>
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using namespace std;
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int main()
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{
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ifstream file("type.txt");
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ofstream file2("type2.txt");
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string line;
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while (file.good())
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{
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getline(file, line);
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file2 << line << endl;
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}
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file2.close();
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file.close();
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return 0;
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}

‎file_handling/copy_file.exe‎

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‎file_handling/file_pointers.cpp‎

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#include <iostream>
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#include<fstream>
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using namespace std;
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int main()
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{
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ofstream file("type.txt");
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ifstream file2("type.txt");
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// using seekp() and tellp()
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// cout<<file.tellp()<<endl;
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// file << "hello hadi";
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// cout<<file.tellp()<<endl;
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// file.seekp(-5, ios::end);
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// cout<<file.tellp()<<endl;
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// file << "faiz";
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// file.seekp(0, ios::beg);
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// file<<"hello";
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// file.close();
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// string line;
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// while(file2.good()){
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// getline(file2, line);
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// cout<<line;
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// }
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// using seekg() and tellg()
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return 0;
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}
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// file pointers
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// the are the outfile operators (ifstream)
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// seekp use to move tthe pointers
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// tellp use for tell about current loaction of the pionter
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// input file ooperators are (ofstream)
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// seekg use for the reading from the specific words
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// tellg use for the tell about current loation
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// SYNTEX
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// pointer(o, R)
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// offset means how mmuch u want to move an pointer by byte using (- or +)
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// refrence, where you want to start it i:e ios::beg, ios::end, ios::current
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‎file_handling/file_pointers.exe‎

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‎file_handling/get_out.cpp‎

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#include <iostream>
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#include<fstream>
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using namespace std;
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int main()
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{
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fstream file("type.txt", ios::in | ios::out);
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if(!file.is_open())
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{
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cout<<"error";
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}
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else
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{
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// cout<<file.tellg()<<endl; // tellg get
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// string line;
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// file.seekg(2); // starting from teaching ---> aching
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// getline(file, line);
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// cout<<line;
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// cout<<file.tellp()<<endl;
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// file << "hello dearest";
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// cout<<file.tellp()<<endl; // tellp (put) only works when we are using the ofstream function
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// file.seekp(5); // we can set the position, ios::beg, ios::in, ios::end
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// file <<" helloowwww";
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// cout<<file.tellp()<<endl;
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cout<<file.tellg()<<endl;
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cout<<file.tellp()<<endl;
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file.seekp(2);
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cout<<file.tellg()<<endl;
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cout<<file.tellp()<<endl;
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}
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return 0;
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}
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‎file_handling/get_out.exe‎

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