How to edit the first line in a text file in c++?
- by tsubasa
I have a text file looks like this :
100 50 20 90
4.07498 0.074984
37.1704 28.1704
20.3999 14.3999
48.627 35.627 ....
I need to edit this file so that everything is kept the same except the first line, 3rd item. The ouput should look like this:
100 50 19 90
4.07498 0.074984
37.1704 28.1704
20.3999 14.3999
48.627 35.627
....
How can I do it in c++ ? Can anybody help me?
Thanks,
Hoang