grepping diff output starting with '>' instead of 'c'

q4/q4.sh

 #!/bin/bash
 # wc generated_output.txt |awk '{print $2}'
 
-
-mismatch=$(diff generated_output.txt actual_output.txt | grep "c" | wc -l)
+mismatch=$(diff generated_output.txt actual_output.txt | grep "^>"  | wc -l)
 total=$(wc -l < actual_output.txt)
 score=$((total-mismatch))
 echo "Secured $score marks out of $total"