Blocks of code should be set as style "Formatted" like this.
Code: Cpp
Hello,

I want to extract columns from file2 to file3 by matching ids between file1 and file2. The extracted columns should be in same order as file1 ids.

for example:

file1.txt
1823
607
R2A9
802
771

file2.txt
1823 1 2 4
22 11 4 29
607 12 3 3
R2A9 34 4 9
D33 2 1 0
802 30 8 1
771
3 0 9
3RE 6 3 1



output file3.txt should be printed in this way

1823 1 2 4
607 12 3 3
R2A9 34 4 9
802 30 8 1
771
3 0 9

Please suggest me something.

Thanks,
/S