find a sequence of characters in sequence of strings [on hold]

I have a file which contains these data:

• /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150616_072540.451_0_Front.Frontview.png, AspectRatio= 4.79245 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071755.852_0_Front.Frontview.png, AspectRatio= 4.24 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071800.060_0_Front.Frontview.png, AspectRatio= 4.3617 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071802.609_0_Front.Frontview.png, AspectRatio= 3.98214 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071805.559_0_Front.Frontview.png, AspectRatio= 4.31482 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071808.670_0_Front.Frontview.png, AspectRatio= 4.67925 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071818.289_0_Front.Frontview.png, AspectRatio= 4.45455 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071904.912_0_Front.Frontview.png, AspectRatio= 3.85455 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071906.760_0_Front.Frontview.png, AspectRatio= 4.87755 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071925.645_0_Front.Frontview.png, AspectRatio= 4.19298 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071928.516_0_Front.Frontview.png, AspectRatio= 4.30435 /opt/ADL_db/Users/mkhalil/PipeLineWork/ReferenceImageDB/20150612_071931.830_0_Front.Frontview.png, AspectRatio= 4.5

And i would like to find for example the line which has this sequence:

• 20150616_072540.451_0_Front.Frontview.png

I used string find , str compare after dividing the string into tokens and also strstr but it is not working

Code used

void ReadInvertedImageValue (string imagerequired) 
{
    char *FileName= "/opt/ADL_db/Users/mkhalil/PipeLineWork/aspectratiofilesInverted2.txt";
    FILE * pFile;
             char buffer [500];

         pFile = fopen (FileName , "r");

         if (pFile == NULL) perror ("Error opening file1");
         else
         {


              while ( ! feof (pFile) )
              {
                  if ( fgets (buffer , 400 , pFile) == NULL )
                            break;




                char * pch;
                              pch = strtok (buffer,"/,");
                              pch = strtok (NULL, "/,");
                              pch = strtok (NULL, "/,");
                              pch = strtok (NULL, "/,");
                              pch = strtok (NULL, "/,");
                              pch = strtok (NULL, "/,");
                              pch = strtok (NULL, "/,");
            string test=pch;

                cout<<"Current line:"<<test<<endl;
            if( test.compare(imagerequired) ==0 )
            {
                cout<<"Found: "<<buffer<<endl;
                break;
                }
        /*  string str=buffer;
            std::size_t found = str.find(*imagerequired,55);
            if (found!=std::string::npos)
            {
            cout<<"Found: "<<buffer<<endl;
                break;
                }*/



              }
         }
}

void ReadCommonfiles (const char* FileName)
    {


    FILE * pFile;
             char buffer [400];

         pFile = fopen (FileName , "r");

         if (pFile == NULL) perror ("Error opening file1");
         else
         {


              while ( ! feof (pFile) )
              {
                  if ( fgets (buffer , 400 , pFile) == NULL )

            input.push_back(buffer);
            cout<<buffer<<endl;
                ReadInvertedImageValue(buffer);
                break;



              }
         }

    }// End of the function