poj 1917 Automatic Poetry

//主要就是考察输入输出的题目，竟然用了那么久来解决这个问题！自己的基础还不行！ 
#include <iostream>
#include <cstdio>
#include <string>
using namespace std;

int main()
{
    int tc, len1, len2, i, j, pos1, pos2, pos3, pos4;
    string input1, input2, s1, s2, s3, s4, s5, s6;
    bool flag1, flag2;
    cin >> tc;
    cin.get();//放在这里才对 
    while (tc--){
          //cin.get();//之前放在这个位置，无限WA，因为每一次都取一个，所以就造成了输入的出错！ 
          getline(cin, input1);
          getline(cin, input2);
          s1.clear();
          s2.clear();
          s3.clear();
          s4.clear();
          s5.clear();
          s6.clear();
          flag1 = true;
          flag2 = true;
          len1 = input1.length();
          len2 = input2.length();
          for (i = 0; i < len1; i++){
              if (input1[i] == '<' && flag1){
                   flag1 = false;
                   pos1 = i;
              }
              else if (input1[i] == '<' && !flag1){
                   pos3 = i;
              }
              else if (input1[i] == '>' && flag2){
                   flag2 = false;
                   pos2 = i;
              }
              else if (input1[i] == '>' && !flag2){
                   pos4 = i;
              }
          }
          for (i = 0; i < pos1; i++){
              s5.push_back(input1[i]);
          }
          for (i = pos1+1; i < pos2; i++){
              s1.push_back(input1[i]);
          }
          for (i = pos2+1; i < pos3; i++){
              s2.push_back(input1[i]);
          }
          for (i = pos3+1; i < pos4; i++){
              s3.push_back(input1[i]);
          }
          for (i = pos4+1; i < len1; i++){
              s4.push_back(input1[i]);
          }
          for (i = 0; i < len2 && input2[i] != '.'; i++){
              s6.push_back(input2[i]);
          }
          cout << s5 << s1 << s2 << s3 << s4 << endl;
          cout << s6 << s3 << s2 << s1 << s4 << endl;
    }
    
    system("pause");
}