C ++ Phone Book Program

/* C ++ phone Program * // * 1. Read and save txt files. * // * 2. add, delete, and modify contacts. * // * 3. You can query the contact number. * // * 4. You can query contacts by phone number. * // * 5. display all contacts. * // * Running environment vs2010 | codeblocks */# include <iostream> # include <string> # include <vector> # include <fstream> # include <set> # include <stdlib. h> using namespace std; # define file_name1 "phonenumin.txt" // use a macro to define the output file name # define file_name2 "phonenumout.txt" class Phonenumtext {public: string name; string num; Phonenumtext (string mz, string hm) {name = mz; num = hm ;}; class all {public: vector <Phonenumtext> phone; bool addnum (s Tring mz, string hm); bool delnum (int bianhao); void displaynum (vector <Phonenumtext >:: iterator iter1); void displayallnum (); int change (int bianhao ); void find1 (string hm); void find2 (string mz); void readfromtxt (); void savetxt () ;}ans; bool all: addnum (string mz, string hm) {Phonenumtext tmp (mz, hm); for (int I = 0; I <phone. size (); I ++) {if (mz = phone [I]. name) {cout <"this contact already exists! "<Endl; return false ;}} phone. push_back (tmp); cout <"add contact" <tmp. name <"successful" <endl; return false;} bool all: delnum (int bianhao) {if (bianhao> phone. size () | bianhao <1) {cout <"No. input error" <endl; return false ;}vector <Phonenumtext >:: iterator iter1; iter1 = phone. begin () + bianhao-1; phone. erase (iter1); return true;} int all: change (int bianhao) {if (bianhao> phone. size () | bianhao <1) {cout <"No. input error" <<Endl; return 0;} vector <Phonenumtext>: iterator iter1; iter1 = phone. begin () + bianhao-1; cout <"Enter the new number to be modified:" <endl; string str; cin> str; iter1-> num = str; return 1;} void all: displayallnum () {if (phone. size () = 0) {cout <"no contact information" <endl; return;} cout <"No. \ t name \ t number" <endl; for (vector <Phonenumtext>: iterator iter1 = phone. begin (); iter1! = Phone. end (); iter1 ++) {displaynum (iter1) ;}} void all: displaynum (vector <Phonenumtext >:: iterator iter1) {cout <(int) (iter1-phone.begin () + 1) <"\ t" <iter1-> name <"\ t "; cout <"\ t" <iter1-> num <"\ t" <endl;} void all: find1 (string hm) {// enter the number to query the contact for (vector <Phonenumtext>: iterator iter1 = phone. begin (); iter1! = Phone. end (); iter1 ++) {if (iter1-> num = hm) cout <"the contact for this number is:" <iter1-> name <endl; return;} cout <"no contact for this number! "<Endl; return;} void all: find2 (string mz) {// enter the contact query number for (vector <Phonenumtext >:: iterator iter1 = phone. begin (); iter1! = Phone. end (); iter1 ++) {if (iter1-> name = mz) cout <"change the contact number to:" <iter1-> num <endl; return;} cout <"no contact number! "<Endl; return;} void all: readfromtxt () {// read ifstream fin (file_name1) from the file; string mz, hm; while (fin> mz> hm) {addnum (mz, hm);} fin. close (); cout <"read to" <phone. size () <"group data" <endl; system ("pause");} void all: savetxt () {// save it to the file ofstream fout (file_name2 ); for (vector <Phonenumtext>: iterator iter1 = phone. begin (); iter1! = Phone. end (); iter1 ++) {fout <"Contact" <"\ t" <iter1-> name <endl; fout <"Number" <"\ t" <iter1-> num <endl;} fout. close (); cout <"Storage completed" <endl;} void menu_add () {// Add contact menu string name, num; cout <"-> Add contact" <endl; cout <"you are adding a contact" <ans. phone. size () + 1 <"contacts" <endl; cout <"Enter the contact name:" <endl; cin> name; cout <"Enter the contact number:"; cin> num; ans. addnum (name, num); return;} void menu_del () {// contact deletion menu cout <"-> Delete contact" <endl; if (ans. phone. size () = 0) {cout <"no contact information, unable to perform the delete operation" <endl; return;} ans. displayallnum (); cout <"Enter the number of the contact to be deleted:" <endl; int EPT; cin> EPT; if (ans. delnum (ipt) cout <"deleted successfully" <endl; else cout <"failed to delete" <endl; return;} void menu_change () {ans. displayallnum (); cout <"-> enter the ID of the contact to be modified" <endl; int x; cin> x; if (ans. change (x) cout <"you have successfully modified the nth" <ans. phone. size () <"contacts" <endl; else menu_change ();} void menu_find () {// query the cout menu <"-> query" <endl; if (ans. phone. size () = 0) {cout <"no contact information, unable to perform the query operation" <endl; return ;}cout <"select the operation you want to perform: "<endl; cout <" \ t1. enter the contact number to query "<endl; cout <" \ t2. enter the contact query number "<endl; cout <"\ t3. return" <endl; int x; string str; cin> x; switch (x) {case 1: cout <"Enter the number of the contact to be queried:" <endl; cin> str; ans. find1 (str); break; case 2: cout <"enter the name of the contact to be queried:" <endl; cin> str; ans. find2 (str); break; case 3: return; default: cout <"incorrect input" <endl ;}} void menu1 () {// Main Menu int EPT; system ("cls"); while (true) {cout <"\ t ******************************" <<endl; cout <"\ t welcome to use your phone book" <endl; cout <"\ t ******************************" <endl <endl; cout <"select the operation you want to perform:" <endl; cout <"1. add a contact "<endl; cout <" 2. delete the contact "<endl; cout <" 3. show all contacts "<endl; cout <" 4. search for "<endl; cout <" 5. modify "<endl; cout <" 6. save to file "<endl; cout <" 7. exit the program "<endl; cin> EPT; switch (EPT) {case 1: menu_add (); break; case 2: menu_del (); break; case 3: ans. displayallnum (); break; case 4: menu_find (); break; case 5: menu_change (); break; case 6: ans. savetxt (); break; case 7: exit (0); break; default: cout <"incorrect input. Please enter" <endl; break ;} system ("pause"); system ("cls") ;}} int main () {int ipt1; string str1; system ("color "); cout <"\ t ******************************" <endl; cout <"\ t welcome to use your phone book" <endl; cout <"\ t ******************************" <endl <endl; retry: cout <"select Data source:" <endl; cout <"1. read "<endl; cout <" 2. enter <endl; cout <"on the keyboard:" <endl; cin> ipt1; switch (ipt1) {case 1: ans. readfromtxt (); break; case 2: break; default: cout <"incorrect input. Please enter" <endl; goto retry; break;} menu1 (); return 0 ;}