c++读取文件内容并保存到二维数组

 #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 ;

 }