How to print a part of a string?

[durgadevi1]

Hello all,

I have another homework problem.

I have a textfile. It contains lines of string.

I am required to only print out a certain part of the string.

For example the textfile contain:

ABC XXXXX NNNNN
BCD QQQQQ EEEEE
ABC WWWWW AAAAA


I need to print all the parts that come after only ABC.

That means I need to print only XXXXX from the first line and WWWWW from the second line. 

I'm not sure of what code to use to achieve that.