Just include these two lines in the beginning of your main function. These are part of <stdio.h>
freopen( "input.in" , "r" , stdin ); freopen( "output.out" , "w" , stdout ); where "input.in" and "output.out" are input and output files respectively, in current directory. After this, normal scanf and printf will be redirected to files :), and by commenting these two lines, it will be directed to standard i/o. - AK On Sun, Aug 8, 2010 at 10:11 PM, Avijit Singh <[email protected] > wrote: > hey! i got a doubt actually using our own header files how can we change > the standard input and output for a program > for example i want to make file as my standard input and output how can i > make it.I know that the above thing will work if i used file header file > like fstream.h and all but i want to use scanf for taking input from the > file instead of the keyboard so please tell me the way > > -- > You received this message because you are subscribed to the Google Groups > "google-codejam" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-code%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-code?hl=en. > -- Anil Kishore -- You received this message because you are subscribed to the Google Groups "google-codejam" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-code?hl=en.
