Unix : Count words in a line

The below code will count the number of occurrence of a word in a line and print its count.Here it searching for word "hai" in a line.

#!/bin/bash

v_file="/home/unix/test.txt"

while read line
do
count1=`echo $line | awk 'BEGIN {count=0}
{
for(i=1;i<=NF;i++) { if($i == "hai") {count = count + 1}}
}
END{ print count }'`
echo "$line,$count1"

done < $v_file

Input text

hai hai hello
hai how are you
how are you

Output text

hai hai hello,2
hai how are you,1

how are you,0

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