37 lines
1.0 KiB
Bash
Executable File
37 lines
1.0 KiB
Bash
Executable File
#!/bin/bash
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# file: calc.sh
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# example for an interactive chat, run with startprog calc.sh
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# This file is public domain in the USA and all free countries.
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# Elsewhere, consider it to be WTFPLv2. (wtfpl.net/txt/copying)
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#### $$VERSION$$ v0.70-rc1-0-g8883cc9
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# adjust your language setting here
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# https://github.com/topkecleon/telegram-bot-bash#setting-up-your-environment
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export 'LC_ALL=C.UTF-8'
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export 'LANG=C.UTF-8'
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export 'LANGUAGE=C.UTF-8'
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unset IFS
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# set -f # if you are paranoid use set -f to disable globbing
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echo 'Starting Calculator ...'
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echo 'Enter first number.'
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read -r A
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echo 'Enter second number.'
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read -r B
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echo 'Select Operation: mykeyboardstartshere [ "Addition" , "Subtraction" , "Multiplication" , "Division" , "Cancel" ]'
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read -r opt
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echo -n 'Result: '
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case $opt in
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'add'* | 'Add'* ) res="$(( A + B ))" ;;
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'sub'* | 'Sub'* ) res="$(( A - B ))" ;;
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'mul'* | 'Mul'* ) res="$(( A * B ))" ;;
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'div'* | 'Div'* ) res="$(( A / B ))" ;;
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'can'* | 'Can'* ) res="abort!" ;;
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* ) echo "unknown operator!";;
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esac
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echo "$res"
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echo "Bye .."
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