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

 1 #include <iostream>
 2 #include <fstream>
 3 #include <string>
 4 using namespace std;
 5 
 6 int spilt_n(string s)//每行以‘\t’来统计有多个子字符串
 7 {
 8     const char *ch;
 9     int i,count = 1;
10     ch = s.c_str();
11     for(i=0;i<s.length()-1;i++)
12     {
13         if(ch[i]=='\t')count++;
14     }
15 //    cout<<"count:"<<count<<endl;
16     return count;
17 }
18 
19 int main()
20 {
21     ifstream in;
22     ofstream out;
23 
24     in.open("D://test.txt",ios::in);
25     if(!in)
26     {
27         cout<<"open file fail!";
28     }else cout<<"open file success!"<<endl;
29 
30     
31     string str[1000][20];//存放数据
32     string temp;
33     getline(in,temp,'\n');
34     int num;
35     num = spilt_n(temp);
36     in.close();
37     in.open("D://test.txt",ios::in);
38 //    cout<<"num:"<<num<<endl;
39     int mid = 0;
40     int count =0;
41     while(!in.eof())
42     {
43     //    mid = 0;
44         if(mid<num)
45         {
46             getline(in,str[count][mid++],'\t');
47         //    cout<<"count"<<count<<",mid"<<mid<<":"<<str[count][mid++]<<endl;
48         }else{
49             mid = 0;
50             count++;
51         }    
52     }
53 
54 //    cout<<str[0]<<endl;
55     int i,j;
56     for(i=0;i<count;i++)
57     {
58         for(j=0;j<num;j++)
59         {
60             cout<<str[i][j]<<"\t";
61         }
62         cout<<endl;
63     }
64 
65 
66 
67     in.close();
68     return 0;
69 }