Count occurrences where two fields are equal

Question

Is it possible to write an awk one-liner which will compare two fields on the same line to see if they are equal, and output the number of lines where this is true?

I tried:

awk '$1==$2 { print($1 $2); }' foo1 | wc -l     

I don't think this is correct.

Answer 1

awk '$1 == $2 {n++}; END {print n}'