问下这C++错误问题

显示全部楼层 · 2009-1-30 06:28:38

刚学C++，不怎么会用，麻烦高手帮我看下这问题：#include<fstream>#include<iomanip>#include<iostream>#include <cstdlib>using namespace std;struct phone_struct{ char name[9]; char phone[12];};void data_input(); void data_output(); int data_found();void main(){ cout<<"-----------通讯录管理系统-------\\n"; cout<<"增加通讯录信息-----------------------1\\n"; cout<<"显示通讯录信息-----------------------2\\n";
cout<<"查找通讯录信息-----------------------3\\n"; cout<<"退出请选择---------------------------7\\n"; cout<<endl; for(;;) { int i; cout<<"请输入您要选择的选项："; cin>>i; cout<<endl; if(i>0&&i<=7){switch(i)
{ case 1:data_input();break;
case 2:data_output();break;
case 3:data_found();break;case 7:cout<<"--------------------谢谢使用--------------------\\n";
default:return; }cout<<endl;} } }void data_input(){ phone_structphone_book; cout<<"请输入姓名:"<<endl; cin>>phone_book.name; cout<<"请输入电话号码:"<<endl; cin>>phone_book.phone; ofstream fout("phone.txt",ios::app); fout<<phone_book.name<<" "<<phone_book.phone<<\'\\n\'; fout.close(); cout<<"成功写入信息"<<endl;}void data_output(){ phone_structphone_book; ifstream fin("phone.txt"); cout<<"姓名
电话号码"<<endl;while(!fin.eof()){ fin>>phone_book.name>>phone_book.phone;
cout<<phone_book.name<<"
";
cout<<phone_book.phone<<endl;}fin.close();}int data_found(){ phone_struct*phone_book;
ifstream fin("phone.txt"); int n=0; while(!fin.eof()) { fin>>phone_book[n].name; fin>>phone_book[n].phone; ++n; } fin.close(); char nme[9]; cout<<"请输入要查询的姓名"<<endl; cin>>nme; int k=0; while(strcmp(phone_book[k].name,nme)!=0 && k<n ) { ++k; } if(strcmp(phone_book[k].name,nme)==0) return k; else return -1;}就是使用第3个功能的时候，弹出了这个框。附近那里，麻烦高手帮我看下什么问题，和帮我改改，谢谢

int data_found() { phone_struct *phone_book; ifstream fin("phone.txt"); 不能直接用指针，没有分配空间。变成int data_found() { phone_struct p[10], *phone_book=p; ifstream fin("phone.txt"); 或int data_found() { phone_structphone_book[10]; ifstream fin("phone.txt");
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