c++读取文件内容并保存到二维数组

每行数据最后需要Tab处理

 #include <iostream>
 #include <fstream>
 #include <string>
 using namespace std;

 int spilt_n(string s)//每行以‘\t’来统计有多个子字符串
 {
     const char *ch;
     int i,count = ;
     ch = s.c_str();
     for(i=;i<s.length()-;i++)
     {
         if(ch[i]=='\t')count++;
     }
 //    cout<<"count:"<<count<<endl;
     return count;
 }

 int main()
 {
     ifstream in;
     ofstream out;

     in.open("D://test.txt",ios::in);
     if(!in)
     {
         cout<<"open file fail!";
     }else cout<<"open file success!"<<endl;

     string str[][];//存放数据
     string temp;
     getline(in,temp,'\n');
     int num;
     num = spilt_n(temp);
     in.close();
     in.open("D://test.txt",ios::in);
 //    cout<<"num:"<<num<<endl;
     int mid = ;
     int count =;
     while(!in.eof())
     {
     //    mid = 0;
         if(mid<num)
         {
             getline(in,str[count][mid++],'\t');
         //    cout<<"count"<<count<<",mid"<<mid<<":"<<str[count][mid++]<<endl;
         }else{
             mid = ;
             count++;
         }
     }

 //    cout<<str[0]<<endl;
     int i,j;
     for(i=;i<count;i++)
     {
         for(j=;j<num;j++)
         {
             cout<<str[i][j]<<"\t";
         }
         cout<<endl;
     }

     in.close();
     return ;
 }