How to give input to a c++ program from an input file ?

Replies

• 

  Dancer_Engineer

  jigneshdgreat

  I know how to take input in c++ using standard console functions like cout and cin . But how can I use an external input file to give input to it??

  To get input from a file, you will have to use ifstream to read data from files as input streams.
  To get output to a file, you will have to use ofstream to write data to files as output streams.
  
  Include this library: #include
  
  I hope that helps. 😀
• 

  PraveenKumar Purushothaman

  You can try using file handlers... Eg.:
  

  #include 
  int main ()
  {
    FILE * pFile;
    pFile = fopen ("myfile.txt","w");
    if (pFile!=NULL)
    {
      fputs ("fopen example",pFile);
      fclose (pFile);
    }
    return 0;
  }