c++ - Printing Multiple Strings to a File -
i working on phone book, , have far been able have user input info, save string, save string file, , search string using keyword. however, functional first contact inputted. when new contact inputted, overwrites previous string saved in file. how can make print next line, , develop list of contacts can searched through. appreciated. here code:
#include <iostream> #include <string> #include <ostream> #include <fstream> using namespace std; struct person { string name; string address; string phonenumber; string email; }; int main() { resetuserselection: vector<person>contactlist; int userselection = 0; cout << "press 1 add contact" << endl; cout << "press 2 search contact"<<endl; cout << "what want do? "; cin >> userselection; if(userselection == 1) { person newperson; cout << endl; cin.ignore(); cout << "what name? " ; getline(cin,newperson.name); cout << "what address? " ; getline(cin,newperson.address); cout << "what phone number? " ; getline(cin,newperson.phonenumber); cout << "what email? "; getline(cin,newperson.email); cout << endl; string fullcontact = "name: " + newperson.name + ", address: " + newperson.address + ", phone number: " + newperson.phonenumber + ", email: " + newperson.email + "\n"; cout <<fullcontact; cout << endl; ofstream myfile; myfile.open ("contactlist.txt"); myfile << fullcontact; myfile.close(); goto resetuserselection; goto resetuserselection; } else { string search; ifstream myfile; myfile.open ("contactlist.txt"); cout << "who want search for?" << endl; cin >> search; cout << endl; ifstream myfile; myfile.open ("contactlist.txt"); string contact; while(getline(myfile, contact)) { if(contact.find(search) != string::npos) { cout << search << "'s contact info" << endl << contact << endl << endl; } } myfile.close(); goto resetuserselection; } }
when open file writing, set filepointer start of file default. should add append option when opening file.
see api of ofstream::open how this:
myfile.open ("contactlist.txt", ofstream::out | ofstream::app);