错误的矢量输出循环错误

Question

我的循环输出数据不正确。我有7个集合的入站Web数据。我试图将7个记录插入到一​​个向量中，然后显示向量内容后跟一个新行。

    char buff[BUFSIZ];
    FILE *fp = stdout;
    char * cstr = buff;
    vector<std::string> vrecords;
    while(std::fgets(buff, sizeof buff, fp) != NULL){
            for(int i = 0; i < 7; ++i){
                    vrecords.push_back(buff);
            }
            if (!strcmp(cstr, "Buy\n")) {
                   printf("Found buy!\n");
                   for(int t = 0; t < vrecords.size(); ++t){
                          cout << vrecords[t] << " ";
                    }
            }
            if (!strcmp(cstr, "Sell\n")) {
                   printf("Found sell!\n");
            }
            cout << endl;
    }

输出：

output paste

预期产出：

Found buy!
198397652
2014-11-14 15:10:10
Buy
0.00517290
0.00100000
0.00100000
0.00000517

Found buy!
198397685
2014-11-14 15:10:13
Buy
0.00517290
0.00100000
0.00100000
0.00000517

Found buy!
198398295
2014-11-14 15:11:14
Buy
0.00517290
0.00100000
0.00100000
0.00000517

Found sell!
203440061
2014-11-21 16:13:13
Sell
0.00825550
0.00100000
0.00100000
0.00000826

入站数据：

198397652
2014-11-14 15:10:10
Buy
0.00517290
0.00100000
0.00100000
0.00000517
198397685
2014-11-14 15:10:13
Buy
0.00517290
0.00100000
0.00100000
0.00000517
198398295
2014-11-14 15:11:14
Buy
0.00517290
0.00100000
0.00100000
0.00000517
203440061
2014-11-21 16:13:13
Sell
0.00825550
0.00100000
0.00100000
0.00000826