how to do loop in bash code example

Example 1: for loop in shell script

for i in {1..5}
do
   echo "Welcome $i times"
done

Example 2: bash for loop

#!/bin/bash
for (( c=1; c<=5; c++ ))
do  
   echo "Welcome $c times"
done

Example 3: bash script loop

while [ <some test> ]
do
<commands>
done