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Read a file and save every word in a variable to use

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Top Forums Shell Programming and Scripting Read a file and save every word in a variable to use
# 8  
Old 04-12-2019
Quote:
Originally Posted by MadeInGermany
With bash-4 it's a piece of cake:
Code:
#!/bin/bash
# bash-4 required
declare -A sym
sym=(
[zero]=0
[one]=1
[two]=2
[three]=3
[four]=4
[five]=5
[plus]=+
)

while read -r -a words
do
  out=""
  for word in "${words[@]}"
  do
    out+=${sym[$word]-" $word "}
  done
  echo "$out"
done


And how can i use exp to make a result out of the arithmetic equation ? If there is plus, minus and multiplication in the array as well ?
# 9  
Old 04-12-2019
Extending MadeInGermany's appoach by sym[six]=6 and after running his code in bash 4 as required, try
Code:
echo $((out))
 1690

Or, try
Code:
echo $out | bc
1690

This User Gave Thanks to RudiC For This Post:
azaiiez
# 10  
Old 04-12-2019
Quote:
Originally Posted by RudiC
Extending MadeInGermany's appoach by sym[six]=6 and after running his code in bash 4 as required, try
Code:
echo $((out))
 1690

Or, try
Code:
echo $out | bc
1690

it worked, thanks alot. How can i get better at this, like i didn't think of $((out)), i thought of using "if" and conditions to compare it with the input that i give which will make my code even more complicated. Any tips for that ?. Thanks alot brother
# 11  
Old 04-13-2019
What can I say? Read, exercise, be open. This forum (amongst others) is great for learning. Look around, find all types of problems, scrutinize and understand the proposed solutions. Apply what you learned. Solve found problems on your own, and compare to what others proposed. man pages are your friends.
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