UVa1593_Allgnment_Of_Code

 1 /**
 2     start:    integer;    // begins hear
 3  stop: integer;  // ends here
 4   s: string;
 5  c:  char;  // temp
 6 **/                           //测试数据
 7 #include<iostream>
 8 #include<sstream>
 9 #include<string>
10 #include<vector>
11 using namespace std;
12
13 vector<string> txt[1314];
14 string code, tmp;
15 int max_len[200];            //储存每列最大的字符串长度
16
17 void print(const string& s, int len, char extra)
18 {
19     cout << s;
20     for (unsigned int i = 0; i <= len-s.length(); i++)
21         cout << extra;
22 }
23
24 int main()
25 {
26     int cols = 0, row = 0;          //列数, 行数
27     while (getline(cin, code))
28     {
29         istringstream ss(code);     //istringstream从string对象中读取
30         while (ss >> tmp) {
31             max_len[cols] = max(max_len[cols], (int)tmp.size()); //求出每行的每列上的最大字符串长度
32             cols++;                                 //列数++
33             txt[row].push_back(tmp);
34         }
35         row++; cols = 0;                            //行数++, 列数归零
36     }
37     for (int i = 0; i < row; i++)
38     {
39         unsigned int j = 0;
40         for ( ; j < txt[i].size() - 1; j++)
41         {
42             print(txt[i][j], max_len[j], ‘ ‘); //输出单个字符串，长度不够的输出空格
43         }
44         cout << txt[i][j] << endl;             //每行每列
45     }
46     return 0;
47 }

这里有一篇关于:istringstream, ostringstream, stringstream的文章，感觉不错.

http://www.cnblogs.com/gamesky/archive/2013/01/09/2852356.html