How to truncate of a real value and discard its non-integer part in awk?

Question

I have the following dataset (all positive values)

Input file

1 2.3456
1 5.02
2 3.9763333
2 0.123

I would like to truncate the numbers in the second column and discard its non-integer part.

How would one do it in awk?

Desired output file

1 2
1 5
2 3
2 0

Thanks for your help.

Answer 1

try the int() function

awk '{$2=int($2)}1' file

Answer 2

awk '{printf("%d %d\n"), $1, $2;}' inputFileName

Answer 3

Since you want to truncate rather than round, use %d instead of %0.f:

awk '{printf "%s %d\n", $1, $2}'