Use shell to write a bank ATM

Or #! /Bin/bash is the source code of the program at the beginning. I feel that learning is a matter of interest. If I feel bored, I will find a way to add some ingredients to learning. I love learning and spoof .. Wow Kaka.

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#! /Bin/bash # 18.sh emu atm main () {# key = 0 echo "% % "echo" Welcome to "echo" 1 query balance "echo" 2 deposit "echo" 3 withdrawal "echo" 4 robbery" echo "% % "} query () {# key = 1 echo "your current balance is:" $ cash echo "Return, press 0"} save () {# key = 2 echo "Enter the deposit amount" read savecash cash = $ ($ cash + $ savecash) echo "Press 2 to continue deposits, to return the result, press 0 "} get () {# key = 3 echo" Enter the withdrawal amount "read getcash if ($ getcash <$ cash )); then cash = $ ($ cash-$ getcash) echo "Continue withdrawal press 3, return press 0" else echo "insufficient balance, to return the result, press 0 "fi} declare-I cash = 10000 main while:; do read I case" $ I "in 0) clear; main; 1) clear; query ;; 2) clear; save; 3) clear; get; 4) clear; exit; *) clear; main; esac done

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