How to Open a File Using Constructor in C++
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Program 1
// open file using constructor #include<iostream> #include<fstream> #define clrscr() system("cls") using namespace std; int main() { char name1[50]; clrscr(); fstream fout("f://cppfile/City.txt",ios::app); //using constructor // cout<<"Enter Name of City: "; // cin>>name; // fout<<name; // fout.close(); // cout<<"\n File Created........"; // return 0; }
Program 2
// open file using constructor for read mode #include<iostream> #include<fstream> #define clrscr() system("cls") using namespace std; int main() { clrscr(); fstream fin("d://dataflair/Student.txt",ios::in); char name[50]; fin>>name; cout<<name; fin.close(); }
Program 3
// file copy #include<iostream> #include<fstream> #define clrscr() system("cls") using namespace std; int main() { char name[50]; clrscr(); fstream fin("F://cppfile/student.txt",ios::in); fstream fout("F://cppfile/student1.txt",ios::app); fin>>name; fout<<name; cout<<"Copied Success"; return 0; }
Program 4
// merge file #include<iostream> #include<fstream> #define clrscr() system("cls") using namespace std; int main() { char temp[50]; fstream fin1("f://cppfile/student.txt",ios::in); fstream fin2("f://cppfile/city.txt",ios::in); fstream fout("f://cppfile/info.txt",ios::app); //Read data from student file and write in info file fin1>>temp; fout<<temp; fin1.close(); //Read data from city file and write in info file fin2>>temp; fout<<temp; fin2.close(); fout.close(); cout<<"Mere two file"; return 0; }
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