1 #include<iostream>
   2 //#include<iomanip>
   3 //#include<cstdlib>
   4 //#include<cstdio>
   5 //#include<cmath>
   6 //#include<cstring>
   7 //#include<vector>
   8 //#include<algorithm>
   9 //#include<string>
  10 //#include<sstream>
  11 //#include<ncurses.h>
  12 
  13 using namespace std;
  14 
  15 int main(){
  16   ios::sync_with_stdio(false);
  17 
  18   return 0;
  19 }

   1 #include<iostream>
   2 #include<fstream>
   3 #include<ctime>
   4 #include<sstream>
   5 #include<string>
   6 #include<vector>
   7 #include<unistd.h>
   8 #include<dirent.h>
   9 
  10 using namespace std;
  11 void out(const char*);
  12 string name(void);
  13 
  14 int main(){
  15   out( name().c_str() );
  16   return 0;
  17 }
  18 
  19 string name(){
  20   // a.cpp^z.cppまで探して全て存在していたら現在時刻.cpp　のパスを返す
  21   char path[2000];//パス名全体の長さの上限1023バイト
  22   stringstream ss;
  23   getcwd(path,1030);
  24   ss.str("");
  25   ss.clear(stringstream::goodbit);
  26   ss << path << '/';
  27 
  28   //a-zまで探す
  29   struct dirent* dirst;
  30   DIR* dir = opendir(path);
  31   vector<string> used;
  32   vector<string>::iterator itnm;
  33   stringstream tmp;
  34   bool safe=false;//ディレクトリ読めたかフラグ
  35   bool nexist;//存在するとき0,しないとき1
  36 
  37   while( (dirst = readdir(dir)) != NULL ){
  38     used.push_back( dirst->d_name );
  39     safe = true;
  40   }
  41   closedir(dir);
  42 
  43   for(char i='a'; i<='z'; i++){
  44     nexist = 1;
  45     tmp.clear(stringstream::goodbit); tmp.str("");
  46     tmp << i << ".cpp";
  47     for( itnm = used.begin(); itnm != used.end(); itnm++){
  48       if( *itnm != tmp.str() )
  49         nexist *= 1;
  50       else
  51         nexist *= 0;
  52     }
  53     if( nexist && safe){//ファイルが存在しないとき
  54       ss << tmp.str();
  55       return ss.str();
  56     }
  57   }
  58   //a-zまで探す
  59 
  60   //しかたないから時刻をファイル名に
  61   time_t timer = time(NULL);
  62   struct tm* str = localtime( &timer );
  63   ss << str->tm_year+1900 << str->tm_mon+1 << str->tm_mday;
  64   ss << str->tm_hour << str->tm_min << str->tm_sec << ".cpp";
  65   return ss.str();
  66   //時刻
  67 }
  68 
  69 void out(const char* filename){
  70 
  71   ofstream ofs( filename, ios::app);
  72   if(ofs){
  73     cout << filename << "を生成" << endl;
  74     ofs << "#include<iostream>" << endl;
  75     ofs << "//#include<iomanip>" << endl;
  76 
  77     ofs << "//#include<cstdlib>" << endl;
  78     ofs << "//#include<cstdio>" << endl;
  79     ofs << "//#include<cmath>" << endl;
  80     ofs << "//#include<cstring>" << endl;
  81 
  82     ofs << "//#include<vector>" << endl;
  83     ofs << "//#include<algorithm>" << endl;
  84     ofs << "//#include<string>" << endl;
  85     ofs << "//#include<sstream>" << endl;
  86     ofs << "//#include<ncurses.h>" << endl << endl;
  87     ofs << "using namespace std;" << endl << endl;
  88     ofs << "int main(){" << endl;
  89     ofs << "  ios::sync_with_stdio(false);" << endl << endl;
  90     ofs << "  return 0;" << endl;
  91     ofs << "}" << endl;
  92   }else{
  93     cerr << "出力ファイルを開けませんでした" << endl;
  94   }
  95 
  96 }