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  • c++ 写进文件并读出

    #include <iostream>
    #include <fstream>
    #include <vector>
    #include <string>

    int main() {
      std::vector<std::string> v_ip;
      v_ip.clear();

      v_ip.push_back("192.168.127.11");
      v_ip.push_back("192.168.127.23");
      v_ip.push_back("192.168.127.25");
      v_ip.push_back("192.168.127.45");

      for(typename::std::vector<std::string>::const_iterator it=v_ip.begin(); it!=v_ip.end(); ++it) {
        std::fstream fwrite("/root/filejiaa", std::ios::out); /*open for write*/
        fwrite<<*it<<" ";
        fwrite.close();
        fwrite.open("/root/filejiaa", std::ios::in); /*open for read*/
        while(!fwrite.eof()) {
          std::string line;
          getline(fwrite, line);
          if(line.empty())
            break;
          std::cout<<line<<" ";
        }
        fwrite.close();
      }

      return 0;
    }

    vector里的ip每次读进一个filejiaa文件里,然后再把单个读出。

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  • 原文地址:https://www.cnblogs.com/donggongdechen/p/9489704.html
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