C++简易通讯录,不能算是系统的系统

#include"top.h" int main() { books abs; abs.size = 0; int menu; while (1) { showMenu(); cin >> menu; switch (menu) { case 1: addPerson(&abs); break; case 2: showperson(abs); break; case 3: delperson(&abs); break; case 4: findperson(abs); break; case 5: modifyperson(&abs); break; case 6: clear(&abs); break; case 0: cout << "thanks" << endl; system("pause"); return 0; break; default: cout << "wrong!" << endl; break; } } return 0; } void showMenu() { cout << "***************************" << endl; cout << "***** 1、添加联系人 *****" << endl; cout << "***** 2、显示联系人 *****" << endl; cout << "***** 3、删除联系人 *****" << endl; cout << "***** 4、查找联系人 *****" << endl; cout << "***** 5、修改联系人 *****" << endl; cout << "***** 6、清空联系人 *****" << endl; cout << "***** 0、退出通讯录 *****" << endl; cout << "***************************" << endl; } void addPerson(books* abs) { if (abs->size == MAX) { cout << "MAX" << endl; return; } else { string name; int sex; int age; int phone; string addr; bool sex_flag = true, age_flag = true; cout << "name" << endl; cin >> name; abs->personarray[abs->size].name = name; while (sex_flag) { cout << "sex, 1->man, 2->woman" << endl; cin >> sex; if (sex == 1 || sex == 2) { abs->personarray[abs->size].sex = sex; break; } else { cout << "wrong input!" << endl; } } while (age_flag) { cout << "age" << endl; cin >> age; if (age > 0 && age < 120) { abs->personarray[abs->size].age = age; break; } else { cout << "wrong input!" << endl; } } cout << "phone" << endl; cin >> phone; abs->personarray[abs->size].phone = phone; cout << "address" << endl; cin >> addr; abs->personarray[abs->size].addr = addr; abs->size++; cout << "success" << endl; system("pause"); system("cls"); } } void showperson(books abs) { if (abs.size == 0) { cout << "none" << endl; } else { for (int i = 0; i < abs.size; i++) { cout << "No." << i+1 << "person:" << endl; cout << "name:" << abs.personarray[i].name << endl; cout << "age:" << abs.personarray[i].age << endl; cout << "sex:"; int sex = abs.personarray[i].sex; sex == 1 ? cout << "man" << endl : cout << "woman" << endl; cout << "phone:" << abs.personarray[i].phone << endl; cout << "addr:" << abs.personarray[i].addr << endl; cout << endl; } } system("pause"); system("cls"); } int ifexist(books abs, string name) { for (int i = 0; i < abs.size; i++) { if (abs.personarray[i].name == name) { return i; } } return -1; } void delperson(books* abs) { string d_name; cout << "name" << endl; cin >> d_name; int ret = ifexist(*abs, d_name); if (ret == -1) { cout << "none" << endl; return; } else { for (int i = ret; i < abs->size; i++) { abs->personarray[i] = abs->personarray[i + 1]; abs->size--; cout << "success" << endl; } } system("pause"); system("cls"); } void findperson(books abs) { string f_name; cout << "name" << endl; cin >> f_name; int i = ifexist(abs, f_name); if (i == -1) { cout << "can't find" << endl; } else { cout << "name:" << abs.personarray[i].name << endl; cout << "age:" << abs.personarray[i].age << endl; cout << "sex:"; int sex = abs.personarray[i].sex; sex == 1 ? cout << "man" << endl : cout << "woman" << endl; cout << "phone:" << abs.personarray[i].phone << endl; cout << "addr:" << abs.personarray[i].addr << endl; } } void modifyperson(books* abs) { string m_name; int where; bool flag=true; cout << "name" << endl; cin >> m_name; int i = ifexist(*abs, m_name); if (i == -1) { cout << "can't find" << endl; } else { while (flag) { cout << "why would you want to change?" << endl; cout << "1-name; 2-sex; 3-age; 4-phone; 5-addr; 0-none" << endl; cin >> where; switch (where) { case 1: { string name; cout << "name:" << endl; cin >> name; abs->personarray[i].name = name; break; } case 2: { int sex; bool sex_flag = true; while (sex_flag) { cout << "sex, 1->man, 2->woman" << endl; cin >> sex; if (sex == 1 || sex == 2) { abs->personarray[i].sex = sex; break; } else { cout << "wrong input!" << endl; } } break; } case 3: { int age; bool age_flag = true; while (age_flag) { cout << "age" << endl; cin >> age; if (age > 0 && age < 120) { abs->personarray[abs->size].age = age; break; } else { cout << "wrong input!" << endl; } } break; } case 4: { int phone; cout << "phone:" << endl; cin >> phone; abs->personarray[i].phone = phone; break; } case 5: { string addr; cout << "addr:" << endl; cin >> addr; abs->personarray[i].addr = addr; break; } case 0: flag = false; break; default: cout << "wrong input!" << endl; break; } } } system("pause"); system("cls"); } void clear(books* abs) { abs->size = 0; cout << "success" << endl; system("pause"); system("cls"); }