#include <iostream>
using namespace std;

//-----DEBUG---------------------

char* cc(char* ch1, char* ch2)
{
      char* nc = new char[std::strlen(ch1) + std::strlen(ch2)]();
      strcat(nc,ch1);
      strcat(nc,ch2);
      return nc;
};

char* Read(char* file,char* section,char* key)
{
      char* r;
      FILE* f = fopen(file,"rt");
      if(!f)
      {
       cout << "Can't Open file: " << file;
       return "";
      }
      char* newsection = cc("[",cc(section,"]"));
      newsection = cc(newsection,"\n");
      while(!feof(f))
      {
       char* tmp = new char();
       fgets(tmp,100,f);
       //Проверка секции
       if(strcmp(tmp,newsection) == 0)
       {
        char ch[100];
        fgets(ch,100,f);
        char* nk = new char();
        //Поиск нужной строки (до конца файла или до новой секции)
        while((ch[0] != '[') && (ch[0] != EOF))
        {
         char* ct = ch;
         for(int i = 0;i<strlen(ct);i++)
         {
          if(ct[i] == '=')
          {
           nk = strncpy(nk,ct,i);
           nk[i] = '\0';
           //Проверка ключа
           if(strcmp(nk,key) == 0)
           {
            r = strstr(ct,"=")+1;
            cc("\0",r);
            fclose(f);
            cout << "Settings: " << r;
            return r;
           }
          }
         }
         fgets(ch,100,f);
        }
        cout << "Can't find key in file: " << file;
        return "";
       }
      }
      cout << "Can't find section in file: " << file;
      fclose(f);
      return "";
};

//-------------------------------

void main()
{
      cout << Read("Some.txt","game","d");
      cin.get();
};

[game]
sdaf=sdflk
sdflk=dsf
d=sdkfj