Substrings

[gatzke]

My code runs fine until I get to the end where I try to compare a user input letter with a substring. I get all kinds of results depending on the letter I guess. Have I made an error in my code?

#!/bin/bash

printf "Please type a word : "
read word

printf "guess a letter : "
read guess

for (( i=0; i<${#word}; i++ ))
do
if (( $guess == ${word:$i:1} ))
then
printf "yes"
fi
done

[khafa]

hi,


replace

if (( $guess == ${word:$i:1} ))

with

if [ $guess == ${word:$i:1} ]

[gatzke]

Worked. Cheers! Should I do the same with "for" and "if" ?

[scm]

Yes, unless you prefer typing 4 shifted characters instead of two unshifted ones (programmers just don't seem to be as lazy as we used be!).